Technology ShowcaseBrazilian Navy

History / Navy science and technology

Science and technology in the Brazilian Navyfrom 1763 to 2026

From the Royal Arsenal to the submarine built in Itaguaí: how the Navy came to produce the knowledge it uses, and where that line leads today, in the institutes and technologies of this Showcase.

eras
7
sourced milestones
94
people
11
institutes today
18
See the eras

Hydrographic chart of Laguna, Santa Catarina, surveyed and drawn in 1864 by Lieutenant Antonio Luiz von Hoonholtz, later Baron of Teffé. Public domain

Era 1 1763 to 1821

The shipyard and the academy

The Crown decides to build ships in the colony. With the court, in 1808, come the academy, the pharmacy and the shipboard troops.

Driven by the gold of Minas Gerais and by conflicts in the South, the Portuguese Crown founds the Royal Navy Arsenal in 1763 at the foot of São Bento Monastery in Rio de Janeiro. Four years later the yard launches its first ship, the São Sebastião.

The court's move to Brazil in 1808 brings three seeds that last for centuries: the Royal Academy of Midshipmen, founded in Lisbon in 1782 to teach mathematics and navigation sciences; the Military Pharmacy, origin of the Pharmaceutical Laboratory; and the Royal Navy Brigade, the starting point of the Marine Corps.

That same year the Navy Ministry is set up, with a hospital, an archive and a gunpowder factory, and the Arsenal takes on the support of the newly arrived fleet.

Why it matters. Building, teaching and caring: the three callings the Navy still holds today all begin in this era.

Painting of dozens of sailing ships at anchor in a bay, flags flying, a low fortress on the left and green hills behind.
Maritime scene, painting by Leandro Joaquim, late 18th century: an English merchant fleet anchored off Villegagnon Fortress, the island that now houses the Naval Academy. National Historical Museum.Leandro Joaquim (c. 1738-1798), Museu Histórico Nacional. Public domain processed image
Milestones 8
  1. 1763

    The Royal Navy Arsenal is founded

    The Count of Cunha founds the shipyard at the foot of São Bento Monastery in Rio de Janeiro. It is the origin of today's Navy Arsenal and of the practice of designing and building ships in Brazil.

    ShipbuildingInstitutionsCPSN

    Sources (2)

    Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 112-113; Arsenal de Marinha do Rio de Janeiro, Histórico

  2. 1767

    The ship of the line São Sebastião is launched

    The first ship built by the Royal Arsenal, the São Sebastião, known as the “Serpent”, is launched four years after the yard was founded.

    ShipbuildingCPSN

    Sources (2)

    Arsenal de Marinha do Rio de Janeiro, Histórico; Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 112-113

  3. 1782

    The Royal Academy of Midshipmen is founded

    Queen Maria I founds in Lisbon the academy that trains future Portuguese naval officers, with a curriculum of mathematics and sciences applied to navigation.

    EducationInstitutionsEN

    Sources (2)

    Escola Naval, A História da EN; Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 110-111

    Hands in white gloves hold open an old book; the title page shows an engraved globe, the title Atlas des Enfans and library stamps.
    Atlas des Enfans, a 1784 edition that belonged to the Royal Academy of Midshipmen, now held by the Navy's heritage directorate (DPHDM). Photo by the Brazilian Navy, 2019.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
  4. 1808

    The Academy of Midshipmen arrives in Rio

    The Academy crosses the Atlantic with the court, bringing students, teachers and records, and settles in São Bento Monastery until the 1830s. It moves to Villegagnon Island in 1938 as the Naval School.

    EducationInstitutionsEN DPHDM

    Sources (2)

    Escola Naval, A História da EN; Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 110-111

  5. 1808

    The Arsenal takes on the fleet's support

    With the court's arrival, the Royal Arsenal is enlarged to support the fleet and, renamed the Court Navy Arsenal, takes charge of the Navy's funds and supplies in Brazil.

    ShipbuildingInstitutionsCPSN

    Source (1)

    Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 112-113

  6. 1808

    The Royal Navy Brigade lands in Rio

    Created in 1797, the brigade arrives with the royal court, sets up at the São José Fortress on Cobras Island and guards Navy facilities ashore. The date marks the birth of the Brazilian Marine Corps.

    InstitutionsCTecCFN

    Source (1)

    Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 108-109

  7. 1808

    The Navy Ministry is set up in Rio

    The Ministry of Navy and Overseas Affairs is established in Rio. It is followed by the Fleet Headquarters, the Military Archive, the Navy Hospital and the Gunpowder Factory.

    InstitutionsHealth

    Source (1)

    Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 110-111 e 132

  8. 1808

    The Military Pharmacy is created

    A decree creates the pharmacy and places it under apothecary Joaquim José Carvalho. It is the origin of today's Navy Pharmaceutical Laboratory.

    HealthInstitutionsLFM

    Source (1)

    Laboratório Farmacêutico da Marinha, Histórico

Panoramic print of Rio de Janeiro seen from the sea: low houses along the shore, hills crowned with churches and convents, mountains behind and boats in the bay.
View of the city of Rio de Janeiro taken from the anchorage, print by John Heaviside Clark after a drawing by Henry Chamberlain, 1821. National Library of Brazil, via Brasiliana Iconográfica.John Heaviside Clark (1771-1863), after a drawing by Henry Chamberlain (1796-1843), Biblioteca Nacional, via Brasiliana Iconográfica. Public domain processed image

Era 2 1822 to 1889

The imperial science of the sea

The Empire learns to chart its own coast and takes the Navy into international science.

The Empire inherits Portuguese and French charts. From 1830, Brazilian officers survey the coast themselves; Vital de Oliveira charts the northeastern shore, and Hoonholtz, the future Baron of Teffé, writes the Compendium of Hydrography used at the Academy.

During the War of the Triple Alliance, Brazilian engineers design and build ironclads at the Court Arsenal. In 1876 the Hydrographic Office is created under Teffé, who in 1882 leads the Brazilian team observing the Transit of Venus.

In 1888 the Navy Ministry gains the Central Meteorological Office, the Empire's center for meteorology and terrestrial physics, which issues weather warnings to ports.

Why it matters. This is the birth of ocean science as a state service, in a direct line to the DHN and today's Navy Hydrographic Center.

Lithograph of colonial buildings on the waterfront, with a tall three-storey building in the centre, palm trees, a sailing boat and canoes in the foreground.
Rio de Janeiro Navy Arsenal, lithograph by P. G. Bertichen printed by the Imperial Lithographia de Rensburg, 1856. Brasiliana Itaú Collection.Pieter Godfred Bertichen (lithograph by Rensburg), Collection Brasiliana Itaú, via Brasiliana Iconográfica. Public domain processed image

I am a hydrographer in time of peace, but in time of war I claim my standing as a combat officer, and I therefore hasten to request Your Excellency's permission to take the ship under my command to the port of Rio de Janeiro to complete her guns and munitions, and then sail for the River Plate to join the Division in operations.

Antônio Luís von Hoonholtz, futuro Barão de Teffé, comandante de navioRecordLetter written during the War of the Triple Alliance; the text was transcribed from a plaque at the DHN historic buildings.Carta ao Quartel-General da Marinha, transcrita de placa no casario histórico da DHN em Ferreira, Aula inaugural da 77ª turma do CAHO, Anais Hidrográficos LXXXI, 2024, p. 11-12
From the Hydrographic Office to CHMThe Navy's hydrographic service changed its name five times in 122 years without breaking the line. The 1974 regulation itself records the sequence.
  1. 1876Hydrographic OfficeImperial Decree 6,113
  2. 1891Maritime Chart Officereorganization
  3. 1908Navigation Superintendencyreorganization
  4. 1946Directorate of Hydrography and Navigationcurrent name of DHN
  5. 1998Navy Hydrographic Centercreated within DHN, activated in 1999

Sources Decreto nº 74.055, de 13/05/1974, art. 1º; CHM, Histórico

Milestones 9
  1. 1830s

    Brazilian officers draw the first charts

    From 1830 on, Navy officers begin surveying the coast themselves. Until then, navigation relied on Portuguese and French charts, notably those by Mouchez.

    HydrographyCHM

    Sources (2)

    Bohrer, A DHN retratada pela filatelia, Revista do Clube Naval nº 415; Robba, Ciência e território na trajetória de Antônio Luís von Hoonholtz, Navigator v. 20, n. 40, 2024

  2. 1840

    The pharmacy moves into the hospital

    Decree No. 58 attaches the Military Pharmacy to the Army and Navy Hospital.

    HealthLFM

    Source (1)

    Laboratório Farmacêutico da Marinha, Histórico

  3. 1850 to 1867

    Vital de Oliveira surveys the northeastern coast

    In the 1850s and 1860s, Manoel Antônio Vital de Oliveira surveys the coast from Rio Grande do Norte to Alagoas, producing five charts and sailing directions. He is the patron of Brazilian hydrography.

    HydrographyCHM

    Sources (3)

    Bohrer, A DHN retratada pela filatelia, Revista do Clube Naval nº 415; Martins, Institucionalização do serviço hidrográfico e oceanográfico brasileiro, 1931-1942, RMB, 3º trim. 2011; Robba, Ciência e território na trajetória de Antônio Luís von Hoonholtz, Navigator v. 20, n. 40, 2024

    Nautical chart on yellowed paper with a coordinate grid: in the centre, the ring-shaped outline of the atoll with soundings, the title Rocas at top left and notes on the right.
    Chart of Rocas Atoll, surveyed by Manoel Antônio Vital de Oliveira in August 1858. National Digital Library of Chile.Manoel Antônio Vital de Oliveira (1829-1867), Biblioteca Nacional Digital do Chile. Public domain
  4. 1857

    Hydrographic survey of Guanabara Bay

    Serving as aide to the future Viscount of Lamare, young officer Antônio Luís von Hoonholtz, later Baron of Teffé, carries out one of the Navy's first hydrographic surveys.

    HydrographyCHM

    Source (1)

    Robba, Ciência e território na trajetória de Antônio Luís von Hoonholtz, Navigator v. 20, n. 40, 2024

  5. 1859

    The Compendium of Hydrography is published

    Hoonholtz publishes his Compendium of Hydrography, regarded as the first Portuguese-language work on the subject adopted by the Navy Academy.

    HydrographyEducationCHM EN

    Sources (2)

    Robba, Ciência e território na trajetória de Antônio Luís von Hoonholtz, Navigator v. 20, n. 40, 2024; Pontes Lima Junior, Hidrografia! Hidrografia!, RMB, 4º trim. 2014

  6. 1865 to 1866

    Ironclads designed and built at the Arsenal

    During the War of the Triple Alliance, Brazilian engineers such as Napoleão Level and Carlos Braconnot design and build armored warships at the Court Arsenal. The Tamandaré is among the first three.

    ShipbuildingCPSN

    Sources (2)

    Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 192-193; Agência Marinha de Notícias, Marinha inicia construção da quarta fragata da classe Tamandaré

    Pencil drawing of a crowd before a large hull on the slipway, beneath a timber structure hung with flags; a covered stand on the right.
    Launch of the ironclad Sete de Setembro at the Rio de Janeiro Navy Arsenal on 16 May 1874. Drawing by an unidentified artist, Brasiliana Iconográfica.Unidentified author, Brasiliana Iconográfica. Public domain processed image
  7. 1876

    The Hydrographic Office is created

    Decree No. 6,113 creates the Hydrographic Office to produce the general chart of Brazil's coasts, with the Baron of Teffé as its first director. It is the forerunner of the DHN and of today's CHM.

    HydrographyInstitutionsCHM

    Sources (3)

    Decreto nº 6.113, de 02/02/1876; Decreto nº 74.055, de 13/05/1974, art. 1º (linhagem legal da DHN); Robba, Ciência e território na trajetória de Antônio Luís von Hoonholtz, Navigator v. 20, n. 40, 2024

    Full nautical chart on aged paper: the Laguna lagoon with soundings, a large compass rose, the title at top right and a block of sailing directions at bottom left.
    Hydrographic chart of Laguna, Santa Catarina, surveyed by Lieutenant Antonio Luiz von Hoonholtz, 1864. Bibliothèque nationale de France.Antonio Luiz von Hoonholtz (1837-1931), Bibliothèque nationale de France. Public domain
  8. 1882

    The Navy observes the Transit of Venus

    At the invitation of Luís Cruls of the Imperial Observatory, Teffé leads the Brazilian team on St. Thomas, in the Antilles, as part of a 14-nation effort to measure the solar parallax.

    HydrographyEducationCHM DPHDM

    Source (1)

    Robba, Ciência e território na trajetória de Antônio Luís von Hoonholtz, Navigator v. 20, n. 40, 2024

  9. 1888

    The Central Meteorological Office is created

    Decree No. 9,916 sets up within the Navy Ministry the Empire's center for meteorology and terrestrial physics, staffed by naval officers and issuing weather warnings to ports.

    OceanographyInstitutionsCHM

    Source (1)

    Decreto nº 9.916, de 04/04/1888

Panoramic photograph of Guanabara Bay: rocks and houses of Ilha das Cobras in the foreground, the Ilha Fiscal castle in the middle, ships at anchor and mountains behind.
Ilha Fiscal seen from Ilha das Cobras, Rio de Janeiro, between about 1880 and 1890. Instituto Moreira Salles.Unidentified author, Instituto Moreira Salles. Public domain processed image

Era 3 1889 to 1945

New technologies of the Republic

Radio, submarines and aircraft reach the Navy early, but its ships still arrive ready-made from abroad.

The Navy is an early adopter of the technologies changing warfare: wireless telegraphy in 1904, submarines in 1914 and, in 1916, the country's first military flying school. Education grows with the Higher Naval Course (1911) and the Naval War School (1914).

Ships, however, still come ready-made from foreign yards. The Arsenal is modernized on Cobras Island only around 1930. In the 1930s hydrography becomes an institution, Brazil prints its first nautical chart (1933) and the Naval Institute of Biology is created (1934).

The creation of the Air Ministry in 1941 takes away the Navy's air arm and closes the era.

Why it matters. It reveals the tension between adopting technology and mastering it, which drives the rest of this history.

Photograph of a large ship's hull sliding down a shipyard slipway, flags flying above, with cranes and timber staging around it.
Launch of the battleship Minas Geraes at Newcastle upon Tyne, England, 1908. Bain Collection, Library of Congress.Bain News Service, Library of Congress, Bain Collection, via National Museum of the U.S. Navy. Public domain processed image
The four phases of Naval AviationThe Navy founded the country's first military aviation school in 1916, lost its aviation to the new Air Ministry in 1941 and only returned to fixed-wing aircraft in 1998.
  1. 1916 to 1941Naval Aviation School and first air arm
  2. 1952 to 1965Navy Aeronautics Directorate
  3. 1965 to 1998Helicopters only, by decree
  4. 1998 to todayFixed wing returns
  • Aircraft and helicopters
  • Rotary wing only
  • No air arm of its own (1941 to 1952)

Source Comando da Força Aeronaval, Histórico

Milestones 12
  1. 1891

    Hydrography becomes the Maritime Chart Office

    Decree No. 658 reorganizes the Hydrographic Office and renames it the Maritime Chart Office.

    HydrographyInstitutionsCHM

    Source (1)

    Decreto nº 74.055, de 13/05/1974, art. 1º (linhagem legal da DHN)

  2. 1904

    The Navy tests wireless telegraphy

    A commission tests two Telefunken sets at the Naval Battalion on Cobras Island. In 1905 the battleship Aquidabã becomes the first ship of the fleet fitted with the equipment.

    Weapons and sensors

    Source (1)

    Revista do Clube Naval nº 414 (radiotelegrafia)

  3. 1908

    The Navigation Superintendency is created

    Decree No. 6,964 creates the Navigation Superintendency. Coastal charts had been published since 1907, and in 1914 the office moves to Fiscal Island.

    HydrographyInstitutionsCHM

    Sources (2)

    Decreto nº 74.055, de 13/05/1974, art. 1º (linhagem legal da DHN); Bohrer, A DHN retratada pela filatelia, Revista do Clube Naval nº 415

  4. 1911

    The Higher Naval Course is created

    Decree No. 8,650 creates the Higher Naval Course at the Naval School, the forerunner of the Naval War College.

    EducationEGN EN

    Source (1)

    Escola de Guerra Naval, Histórico

  5. 1914

    The Naval War School is created

    Decree No. 10,787 creates the school, which opens on June 11. In 1930 it is renamed the Naval War College.

    EducationInstitutionsEGN

    Sources (2)

    Escola de Guerra Naval, Histórico; Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 240-241

  6. 1914

    The Submarine Flotilla is formed

    Three small Foca-class submarines mark the beginning of the Brazilian Navy's submarine force.

    SubmarinesShipbuildingCPSN

    Source (1)

    Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 240-241

    Old photograph of a narrow, low submarine running on the surface, crew standing on deck and mountains behind.
    Submarine F1, of the Foca class, which opened the Submersibles Flotilla on 17 July 1914 and was decommissioned in 1933.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
  7. 1915

    The Navy Sports League is founded

    The Navy Sports League is the origin of today's CEFAN, which takes its current name in 1973.

    EducationHealthCEFAN

    Source (1)

    CEFAN, Histórico

  8. 1916

    Aviation and Submarine Schools are created

    Decree No. 12,167 creates both schools. The aviation school, the country's first military flying school, starts with three Curtiss F flying boats.

    Naval aviationSubmarinesEducationCPSN

    Sources (3)

    Decreto nº 12.167, de 23/08/1916; Comando da Força Aeronaval, Histórico; Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 230-231

    Sepia photograph of a biplane seaplane resting on a sandy beach, two men beside the fuselage and a building behind.
    Lieutenant Schorcht and Lieutenant Commander Protógenes Guimarães with the seaplane in which they began the first air raid to Campos, Rio de Janeiro, on 4 January 1917.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
  9. 1930

    The new Arsenal opens on Cobras Island

    Designed in 1920 and revised in 1926, the new Arsenal is in operation by 1930. Its Structures Shop was the largest covered industrial area in South America.

    ShipbuildingCPSN

    Source (1)

    Arsenal de Marinha do Rio de Janeiro, Histórico

  10. 1933

    The first nautical chart printed in Brazil

    The Mangaratiba chart, covering Ilha Grande, is printed by a local press, still in rudimentary form. Hydrography becomes an institution in these years, and an offset press arrives in 1939.

    HydrographyCHM

    Source (1)

    Martins, Institucionalização do serviço hidrográfico e oceanográfico brasileiro, 1931-1942, RMB, 3º trim. 2011

  11. 1934

    The Naval Institute of Biology is created

    Decree No. 23,854 creates the institute, whose facilities open in 1935. It is the forerunner of Marcílio Dias Naval Hospital.

    HealthInstitutionsHNMD/IPB

    Source (1)

    Hospital Naval Marcílio Dias, Histórico

  12. 1941

    The Navy loses its air arm

    With the creation of the Air Ministry, the Navy loses its air component. Naval Aviation regains a directorate of its own only in 1952.

    Naval aviation

    Source (1)

    Comando da Força Aeronaval, Histórico

Era 4 1946 to 1969

Science as state policy

The postwar years convince the Navy that it needs its own laboratory and a national science policy.

In 1947 Admiral Álvaro Alberto takes a proposal for an atomic program to the government, and he conceives the CNPq, created in 1951 with him as president. In 1954 he negotiates three German ultracentrifuges, whose shipment is blocked by the Allied occupation authorities.

In 1953 Admiral Paulo Nogueira Penido proposes a research laboratory. The cornerstone is laid in 1955 and IPqM is born in 1959, with marine biology and oceanography alongside weapons and electronics. Robert Oppenheimer visits in 1961.

In 1956 Paulo Moreira identifies the Cabo Frio upwelling as a source of food from the sea. The pharmacy becomes the Pharmaceutical Laboratory in 1958.

Why it matters. It produces the Navy's first R&D center and an explicit bridge between the Navy, national science and nuclear energy.

Photograph of several helicopters parked on a concrete apron by the water, one of them in the foreground and the sea behind.
Helicopters of the 1st General Purpose Helicopter Squadron (HU-1) in the 1960s, during the second phase of naval aviation.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image

The export, in any form, of uranium and thorium and their compounds and ores is prohibited, except from government to government, after consultation with the competent bodies.

Lei nº 1.310, art. 4º, que cria o CNPq, 1951-01-15DocumentLei nº 1.310, de 15/01/1951
Milestones 12
  1. 1946

    The Directorate of Hydrography and Navigation is created

    Decree-Law No. 9,356 restructures the Navigation Directorate as the Directorate of Hydrography and Navigation (DHN).

    HydrographyInstitutionsCHM

    Source (1)

    Decreto nº 74.055, de 13/05/1974, art. 1º (linhagem legal da DHN)

  2. 1947

    A national atomic program is approved

    The National Security Council approves Admiral Álvaro Alberto's proposal, sent from New York, for a national atomic energy program.

    NuclearInstitutions

    Source (1)

    Patti, Origins and Evolution of the Brazilian Nuclear Program (1947-2011), Wilson Center

  3. 1951

    The National Research Council is created

    Law No. 1,310 creates the CNPq, conceived and first chaired by Admiral Álvaro Alberto. The law bans exports of uranium and thorium except between governments.

    InstitutionsNuclearDGDNTM

    Sources (3)

    Lei nº 1.310, de 15/01/1951; CNPq, O Almirante; Memória CNEN, Cronologia Brasil

  4. 1951

    Marcílio Dias Naval Hospital is named

    Decree No. 29,486 gives the name Marcílio Dias Naval Hospital to the former Naval Institute of Biology complex.

    HealthInstitutionsHNMD/IPB

    Source (1)

    Hospital Naval Marcílio Dias, Histórico

  5. 1953

    A Navy research laboratory is proposed

    In Letter No. 1204, Director-General of Electronics Admiral Paulo Nogueira Penido proposes to the Navy Minister the creation of a research laboratory.

    Weapons and sensorsInstitutionsIPqM

    Sources (2)

    Instituto de Pesquisas da Marinha, Histórico; DGDNTM, Instituto de Pesquisas da Marinha: uma história de conquistas, Revista do Clube Naval nº 402, 2022

  6. 1954

    Three ultracentrifuges are bought in Germany

    In secret talks led by Álvaro Alberto, Brazil buys three ultracentrifuges in West Germany. The Allied occupation authorities, under US pressure, block their shipment.

    Nuclear

    Sources (3)

    Memória CNEN, Cronologia Brasil; DHBB/CPDOC, verbete Álvaro Alberto da Mota e Silva; Kassenova, Brazil's Nuclear Kaleidoscope, Carnegie Endowment, 2014

  7. 1955

    IPqM's cornerstone is laid

    The cornerstone is laid at Ponta do Matoso, on Governador Island, with Álvaro Alberto present. The building is designed by architects Hélio Queiroz Duarte and Ernest Mange.

    InstitutionsIPqM

    Sources (2)

    Instituto de Pesquisas da Marinha, Histórico; DGDNTM, Instituto de Pesquisas da Marinha: uma história de conquistas, Revista do Clube Naval nº 402, 2022

  8. 1956

    Paulo Moreira points to the Cabo Frio upwelling

    Lieutenant Commander Paulo Moreira identifies the Cabo Frio area, where cold, nutrient-rich water wells up, as a promising place to produce protein from the sea.

    OceanographyIEAPM

    Source (1)

    IEAPM, Histórico do IEAPM

  9. 1958

    The pharmacy becomes the Pharmaceutical Laboratory

    Decree No. 44,898 restructures the former Military Pharmacy and names it the Navy Pharmaceutical Laboratory.

    HealthInstitutionsLFM

    Source (1)

    Laboratório Farmacêutico da Marinha, Histórico

  10. 1959

    The Navy Research Institute is created

    Decree No. 46,426 creates IPqM with seven fields: weapons, marine biology, biochemistry, physical oceanography, electronics, chemistry and underwater acoustics.

    Weapons and sensorsOceanographyInstitutionsIPqM

    Source (1)

    Instituto de Pesquisas da Marinha, Histórico

    Photograph of a single-storey modernist building with large glass windows and a canopy, a lawn crossed by concrete paving slabs and young palm trees.
    Building of the Navy Research Institute (IPqM), created in 1959 on Ilha do Governador, Rio de Janeiro. Undated colour slide, Dyrce Lacombe collection, Casa de Oswaldo Cruz.Unidentified author, Casa de Oswaldo Cruz (Fiocruz), coleção Dyrce Lacombe. CC BY-SA 4.0 processed image
  11. 1961

    The aircraft carrier Minas Gerais arrives

    The aircraft carrier Minas Gerais arrives, and Notice No. 1003 of June 5 creates the Naval Air Force.

    Naval aviation

    Source (1)

    Comando da Força Aeronaval, Histórico

    Photograph of an aircraft carrier at anchor in the bay, its island on the right of the flight deck, a passenger ferry in the foreground and the city waterfront behind.
    Light aircraft carrier Minas Gerais (A11) at anchor off Rio de Janeiro in 1968. U.S. Navy photo.U.S. Navy (cruise book do USS America). Public domain (US Government work) processed image
  12. 1961

    Robert Oppenheimer visits IPqM

    Physicist Robert Oppenheimer signs the institute's Book of Honor. Álvaro Alberto also records the visit.

    EducationIPqM

    Source (1)

    DGDNTM, Instituto de Pesquisas da Marinha: uma história de conquistas, Revista do Clube Naval nº 402, 2022

Era 5 1970 to 1989

Frigates, computers and the sea

A digital frigate program pulls along a computer, a company and a research center. The same period creates most of today's institutes.

The Niterói frigates, the Navy's first ships with digital weapon and sensor systems, lead to three offshoots: the working group behind the G-10 computer and COBRA (1974), CASNAV (1975), created to evaluate them, and the building of two of them at the Rio Navy Arsenal. The Naval Engineering Directorate designs the Inhaúma corvettes.

The Navy Nuclear Program begins in 1979 within the autonomous program known as the parallel program. It gains COPESP in 1986, sees mastery of enrichment announced in 1987 and opens Aramar in 1988. The 1988 Constitution limits nuclear activity to peaceful purposes.

The Cabo Frio Project becomes INEM (1984), today's IEAPM. Brazil reaches Antarctica (1982 and 1984) and begins surveying its own continental shelf (1987).

Why it matters. This is the era of import substitution in sensitive technology, with the Navy as the customer that drives industry.

Photograph of a ship's bow dressed with flags at the top of the slipway, between cranes and scaffolding, with sailors in white and guests in the foreground.
Launch of the frigate União (F45), one of the two Niterói-class frigates built at the Rio de Janeiro Navy Arsenal in the 1970s.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image

all nuclear activity within the national territory shall only be admitted for peaceful purposes and subject to the approval of the National Congress

Constituição Federal de 1988, art. 21, XXIII, a, 1988-10-05DocumentConstituição da República Federativa do Brasil de 1988
One order, three spin-offsThe Niterói-class frigates were the Navy's first ships with digital weapon and sensor systems. Operating and assessing them produced a national computer, a computer company and an operations research center.
1970Niterói-class frigatessix ships ordered, four built in England and two in Brazil
  1. Computer1972G-10 prototypedeveloped by USP and PUC-Riobefore: Special Working Group, 1971, a Navy initiative with the Planning Secretariat
  2. Company1974COBRAComputadores e Sistemas Brasileiros, born from Navy demand, inherits the G-10
  3. Research center1975CASNAVcreated for the operational assessment of the frigates

Two of the six frigates, Independência and União, were built at the Rio de Janeiro Navy Arsenal between 1972 and 1980.

Sources Vaisburd, "Yes, o Brasil tem Cobra", COPPE/UFRJ, 1999; CASNAV, Histórico; Vogt, Revista Marítima Brasileira, 1º trim. 2015

The nuclear fuel cycleSeven steps take ore to the reactor. Enrichment is the most tightly controlled: it is where ABACC and IAEA safeguards apply. Brazil's ultracentrifuge technology was developed by the Navy technology center in São Paulo, with IPEN, and equips the INB plant in Resende.
  1. 01Mining and millingore becomes concentrate (yellowcake)
  2. 02Conversionconcentrate becomes uranium hexafluoride, a gas
  3. 03Enrichmentcascaded ultracentrifuges separate uranium-235; ABACC and IAEA safeguardsStep developed by the Navy
  4. 04Reconversionthe gas becomes uranium dioxide powder again
  5. 05Fuel elementpellets in grouped rods
  6. 06Reactorfission produces heat; in a submarine, propulsion. LABGENE, at Aramar, is the land-based prototypeStep developed by the Navy
  7. 07Back endspent fuel storage and waste management
Natural uranium: about 0.7% uranium-235. Low enrichment, used in power reactors: 3% to 5%.0%1%2%3%4%5%
  • Natural uranium: about 0.7% uranium-235
  • Low enrichment, used in power reactors: 3% to 5%

Sources CNEN, apostila "A Energia Nuclear e suas Aplicações"; INB, "O que é o enriquecimento"; Planalto, PROSUB, 27/03/2024

Comandante Ferraz Antarctic StationOpened in 1984 at Admiralty Bay, on King George Island, the station began with 8 modules and room for 12 people. After the 2012 fire it was rebuilt and reopened in 2020 with 17 laboratories. By the 2025 to 2026 summer, Brazil had carried out 44 Antarctic operations.
AntarcticaOpened in 1984 at Admiralty Bay, on King George Island, the station began with 8 modules and room for 12 people. After the 2012 fire it was rebuilt and reopened in 2020 with 17 laboratories. By the 2025 to 2026 summer, Brazil had carried out 44 Antarctic operations.

    Coastline: Natural Earth. Station position: Wikidata. Illustrative, not for navigation. South polar stereographic (true-scale parallel 71° S, central meridian 58° W, WGS84); the inset uses the same projection.

    Panorama of a snow-covered plain with the station's low modules and antennas in the distance, white mountains and people walking far off.
    Comandante Ferraz Antarctic Station on Keller Peninsula, King George Island, on 1 November 2011, before the 2012 fire.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
    Photograph of a group of long, dark modules on rocky ground by the sea, with a pond in the foreground and a mountainous island behind.
    New buildings of the Comandante Ferraz Antarctic Station, reopened in January 2020 with 17 laboratories. Photo taken on 12 January 2020.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image

    Sources Natural Earth, Admin 0 Countries 1:10m e 1:50m, Land 1:10m, Antarctic Ice Shelves 1:10m; Wikidata Q683143, Estação Antártica Comandante Ferraz, coordenada (P625); SECIRM, Estação Antártica Comandante Ferraz

    Milestones 18
    1. 1971

      A working group for a naval computer

      At the Navy's initiative, with the Planning Secretariat and Funtec/BNDE funding, a working group pursues a prototype computer for naval operations. In 1972, USP and PUC-Rio build the G-10.

      Computing

      Source (1)

      Vaisburd, Yes, o Brasil tem Cobra, dissertação, COPPE/UFRJ, 1999

    2. 1971 to 1974

      The Cabo Frio Project begins

      Conceived by Paulo Moreira at IPqM, the project starts in 1971 and moves to Arraial do Cabo in 1974, with ice for fishermen, mariculture and the idea of a university of the sea.

      OceanographyIEAPM IPqM

      Sources (2)

      IEAPM, Histórico do IEAPM; Instituto de Pesquisas da Marinha, Histórico

    3. 1971

      The Marine Corps technical center is created

      The Marine Corps Special Repairs and Supplies Center is created and activated in 1972. In 2012 it becomes the Marine Corps Technology Center.

      InstitutionsCTecCFN

      Source (1)

      CGCFN, Carta de Serviços ao Usuário do CTecCFN

    4. 1972 to 1980

      Niterói frigates: the first digital ships

      Designed by Vosper Thornycroft, four frigates are built in England and two, Independência and União, at the Rio Navy Arsenal. They are the Navy's first ships with digital weapon and sensor systems.

      ShipbuildingWeapons and sensorsComputingCASNAV IPqM

      Sources (2)

      Vogt, Novo estudo de um escolta para a Marinha do Brasil, RMB, 1º trim. 2015; CASNAV, Histórico

    5. 1974

      COBRA is born from the Navy's demand

      Computadores e Sistemas Brasileiros (COBRA) is founded and takes over the G-10. The working group is dissolved in 1976, and its successor, the G-11, comes out in 1978.

      Computing

      Source (1)

      Vaisburd, Yes, o Brasil tem Cobra, dissertação, COPPE/UFRJ, 1999

    6. 1975

      The Naval Systems Analysis Center is created

      Decree No. 75,335 creates CASNAV to evaluate the Niterói frigates through operations research, staffed by officers trained in operations analysis at the Naval Postgraduate School.

      ComputingInstitutionsCASNAV

      Source (1)

      CASNAV, Histórico

    7. 1978 to 1994

      Inhaúma corvettes: designed in Brazil

      The Naval Engineering Directorate handles concept and design; the Rio Navy Arsenal details and builds them. They are the first combat ships designed and built in Brazil since the Republic began.

      ShipbuildingCPSN

      Source (1)

      Vogt, Novo estudo de um escolta para a Marinha do Brasil, RMB, 1º trim. 2015

      Photograph of a grey corvette steaming through rough sea, throwing up spray at the bow, with the number V30 on the hull.
      Corvette Inhaúma (V30), first of the class conceived by the Directorate of Naval Engineering and built at the Rio de Janeiro Navy Arsenal. Photo from 2005.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
    8. 1979

      The Navy Nuclear Program begins

      The Navy starts its program to master the nuclear fuel cycle and develop a propulsion plant. It is part of Brazil's autonomous program, known as the parallel program, secret and outside safeguards.

      NuclearCTMSP

      Sources (3)

      CTMSP, Programa Nuclear da Marinha; Agência Marinha de Notícias, L. Guimarães, A retórica e o cofre, 14/10/2025; Patti, Origins and Evolution of the Brazilian Nuclear Program (1947-2011), Wilson Center

    9. 1982

      First enrichment with Brazilian centrifuges

      The first uranium enrichment experiment using ultracentrifuges of Brazilian design, developed under the Navy program, is carried out.

      NuclearCTMSP

      Source (1)

      INB, História

    10. 1982

      IKL-1400 submarines are ordered

      The Tupi is built in Kiel, Germany, and the other three of the class at the Rio Navy Arsenal between 1986 and 1999. The second, Tamoio, is the first submarine built in Brazil.

      SubmarinesShipbuildingCPSN

      Source (1)

      Vogt, Novo estudo de um escolta para a Marinha do Brasil, RMB, 1º trim. 2015

      Aerial photograph of a submarine running on the surface, its sail above water and a white wake, with a helicopter flying low behind.
      Submarine Tamoio (S31), the first built in Brazil, at the Rio de Janeiro Navy Arsenal. Photo from 2006.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
    11. 1982

      The Brazilian Antarctic Program is created

      Decree No. 86,830 assigns the Antarctic Program to CIRM, the interministerial sea resources commission created in 1974. In December, two research ships sail on the first expedition.

      Antarctica

      Sources (3)

      Decreto nº 86.830, de 12/01/1982; SECIRM, Estação Antártica Comandante Ferraz; SECIRM, Institucional

      Photograph of a red-hulled ship among floating ice, in front of snow-covered mountains.
      Oceanographic support ship Ary Rongel (H44) in Antarctic waters, 4 January 2004.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
    12. 1984

      Comandante Ferraz Antarctic Station opens

      On Keller Peninsula, King George Island, the station opens with eight modules, about 150 m² and a 12-person base team for 32 days.

      Antarctica

      Sources (2)

      SECIRM, Estação Antártica Comandante Ferraz; Agência Marinha de Notícias, Estação Antártica Comandante Ferraz completa 41 anos

    13. 1984

      The National Institute of Sea Studies is created

      INEM takes over the Cabo Frio Project and IPqM's marine biology work. In 1985 it is named after Paulo Moreira, becoming today's IEAPM.

      OceanographyInstitutionsIEAPM IPqM

      Sources (2)

      IEAPM, Histórico do IEAPM; Instituto de Pesquisas da Marinha, Histórico

    14. 1986

      COPESP, forerunner of CTMSP, is created

      Decree No. 93,439 creates the Special Projects Coordination Office in São Paulo to obtain systems with special characteristics for the Navy. Since 1995 it has been called CTMSP.

      NuclearInstitutionsCTMSP

      Sources (2)

      Decreto nº 93.439, de 17/10/1986; CTMSP, Quem somos

    15. 1987

      The continental shelf survey begins

      The survey ship Almirante Câmara carries out the first LEPLAC mission. In 1989, Decree No. 98,145 approves the plan that underpins Brazil's later claim at the UN.

      HydrographyBlue AmazonCHM

      Sources (3)

      SECIRM, LEPLAC; Ferreira, Aula inaugural da 77ª turma do CAHO, Anais Hidrográficos LXXXI, 2024; Decreto nº 98.145, de 15/09/1989

    16. 1987

      Mastery of enrichment is announced

      The President announces that Brazil has mastered uranium enrichment, achieved within the autonomous program known as the parallel program.

      NuclearCTMSP

      Sources (2)

      Memória CNEN, Cronologia Brasil; Patti, Origins and Evolution of the Brazilian Nuclear Program (1947-2011), Wilson Center

    17. 1988

      The Biomedical Research Institute is created

      Under Decree No. 95,869, Marcílio Dias Naval Hospital takes over the Navy's medical research through the Biomedical Research Institute.

      HealthHNMD/IPB

      Source (1)

      Hospital Naval Marcílio Dias, Histórico

    18. 1988

      Aramar Experimental Center opens

      In Iperó, São Paulo State, Aramar becomes home to the Navy nuclear program's facilities, including the Admiral Álvaro Alberto Enrichment Unit.

      NuclearInstitutionsCTMSP DDNM

      Sources (2)

      Memória CNEN, Cronologia Brasil; CTMSP, Enriquecimento

      Aerial photograph of a complex of white sheds and buildings among red-soil fields, woodland and internal roads.
      Aerial view of the Aramar Experimental Center in Iperó, São Paulo, during the IAEA Director General's visit on 17 July 2021. IAEA Imagebank.IAEA Imagebank (Flickr). CC BY 2.0 processed image

    Era 6 1990 to 2007

    The Blue Amazon

    The focus of naval science shifts from the ship to the maritime territory.

    Law 8,617 (1993) and the entry into force of the Law of the Sea Convention for Brazil (1994) give the maritime territory a legal basis. In 2004 the country submits its continental shelf outer limit to the UN, and the Navy Commander coins the term Blue Amazon.

    CASNAV starts providing S&T services (1997), fixed-wing aviation returns (1998), the Hydrographic Center is created (1998) and a research station begins operating on the São Pedro and São Paulo Archipelago.

    Brazil creates ABACC with Argentina (1991) and joins the NPT (1998). On a tight budget, the nuclear program brings its centrifuges to industry at Resende (2006) and is revived in 2007.

    Why it matters. It gives this history its central argument: ocean science is sovereignty, which is why hydrography, ocean data and maritime surveillance are S&T subjects.

    Photograph of a flooded dock decorated with green and yellow bunting, gantry cranes on both sides and a submarine at the far end of the dock.
    Launch ceremony of the submarine Tikuna (S34) at the Rio de Janeiro Navy Arsenal, 2000s.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
    Blue Amazon: science that becomes territoryThe Exclusive Economic Zone extends 200 nautical miles from the coast and islands. Beyond it, Brazil may extend its continental shelf if it proves, through geological and geophysical surveys, that the seabed is a natural prolongation of its territory. LEPLAC, begun in 1987, carried out those surveys; the UN has approved two areas and is reviewing the third.
    Blue AmazonThe Exclusive Economic Zone extends 200 nautical miles from the coast and islands. Beyond it, Brazil may extend its continental shelf if it proves, through geological and geophysical surveys, that the seabed is a natural prolongation of its territory. LEPLAC, begun in 1987, carried out those surveys; the UN has approved two areas and is reviewing the third.
    • Exclusive Economic Zone (up to 200 nautical miles) 3,677,664 km²
    • Southern Region: shelf beyond 200 miles with UN recommendation (2019) about 170,000 km²
    • Equatorial Margin: shelf beyond 200 miles with UN recommendation (2025) about 360,000 km²Drawn from the limit submitted in 2017; the limit approved in 2025 is not yet available as open data and may differ slightly.
    • Eastern and Southern Margins: area claimed beyond 200 miles, under UN review about 1,500,000 km²

    EEZ and continental shelf: Flanders Marine Institute, Marine Regions, CC BY 4.0. Coastline: Natural Earth. Illustrative, not for navigation. Albers equal-area conic (standard parallels 2° S and 28° S, central meridian 48° W, WGS84); preserves areas.

    Sources Natural Earth, Admin 0 Countries 1:10m e 1:50m, Land 1:10m, Antarctic Ice Shelves 1:10m; Marine Regions, World EEZ v12 (MRGID 8464 e 8381); SECIRM, LEPLAC (áreas oficiais anunciadas)

    Milestones 13
    1. 1991

      Brazil and Argentina create ABACC

      The two countries sign an agreement on the exclusively peaceful use of nuclear energy and create ABACC. In December they sign the Quadripartite Agreement with the IAEA in Vienna.

      NuclearInstitutions

      Sources (3)

      Memória CNEN, Cronologia Brasil; ABACC, About ABACC; Decreto nº 1.065, de 24/02/1994 (Acordo Quadripartite)

    2. 1993

      A law defines Brazil's maritime zones

      Law No. 8,617 defines Brazil's territorial sea, exclusive economic zone and continental shelf in line with the UN Convention on the Law of the Sea.

      Blue AmazonHydrographyCHM

      Sources (2)

      Lei nº 8.617, de 04/01/1993; SECIRM, LEPLAC

    3. 1994

      The Law of the Sea Convention enters into force for Brazil

      The UN Convention on the Law of the Sea enters into force for Brazil, providing the legal basis for its claim to the continental shelf beyond 200 nautical miles.

      Blue AmazonCHM

      Source (1)

      SECIRM, LEPLAC

    4. 1997

      CASNAV becomes an S&T service provider

      CASNAV becomes a military organization providing science and technology services, with cost accounting and targets. Since 1993 it had been recognized as a federal S&T body.

      ComputingInstitutionsCASNAV

      Source (1)

      CASNAV, Histórico

    5. 1998

      A research station on the São Pedro and São Paulo Archipelago

      The first research station on the São Pedro and São Paulo Archipelago, in the middle of the Atlantic, begins operating. It is replaced by a new one in 2008.

      OceanographyBlue Amazon

      Source (1)

      InfoCIRM, estação do Arquipélago de São Pedro e São Paulo

    6. 1998

      Naval Aviation returns to fixed-wing aircraft

      Decree No. 2,538 returns fixed-wing aircraft to the Navy, which had been limited to helicopters since 1965. The fourth phase of Naval Aviation begins.

      Naval aviation

      Source (1)

      Comando da Força Aeronaval, Histórico

    7. 1998

      Brazil joins the NPT

      Brazil deposits its instrument of accession to the Treaty on the Non-Proliferation of Nuclear Weapons. The 1988 Constitution already limited nuclear activity to peaceful purposes.

      Nuclear

      Sources (2)

      Decreto nº 2.864, de 07/12/1998 (TNP); Constituição Federal de 1988, art. 21, XXIII, a

    8. 1998

      The Navy Hydrographic Center is created

      Ministerial Order No. 360 creates the CHM, which is activated within the DHN on December 27, 1999.

      HydrographyOceanographyInstitutionsCHM

      Source (1)

      Centro de Hidrografia da Marinha, Histórico

    9. 2004

      The term Blue Amazon is coined

      In the article “The other Amazon”, in Folha de S.Paulo, the Navy Commander coins the term Blue Amazon for the waters under Brazilian jurisdiction.

      Blue AmazonEGN

      Source (1)

      Rodrigues, A Amazônia Azul sob a perspectiva da economia política do mar, Revista da EGN v. 27, n. 3

    10. 2004

      Brazil submits its shelf limit to the UN

      Brazil submits its outer limit proposal to the Commission on the Limits of the Continental Shelf: 960,000 km² beyond 200 nautical miles, based on LEPLAC surveys.

      Blue AmazonHydrographyCHM

      Source (1)

      SECIRM, LEPLAC

    11. 2006

      Navy centrifuges reach industry

      INB opens in Resende, Rio de Janeiro State, the first industrial cascade of ultracentrifuges developed by CTMSP with IPEN. Work on the plant had begun in 2000.

      NuclearCTMSP

      Sources (2)

      INB, INB finaliza primeira fase de usina de enriquecimento de urânio, 21/11/2022; INB, O que é o enriquecimento e como ele é feito

    12. 2007

      The UN asks for part of the claim to be revised

      The Commission disagrees with about 190,000 km², or 20% of the area claimed. Brazil decides to prepare a revised submission backed by new surveys.

      Blue AmazonHydrographyCHM

      Source (1)

      SECIRM, LEPLAC

    13. 2007

      The government revives the Nuclear Program

      Visiting Aramar and the LABGENE prototype plant, the President announces funding to revive the program after years of sharply reduced budgets.

      NuclearCTMSP

      Sources (2)

      Kassenova, Brazil's Nuclear Kaleidoscope, Carnegie Endowment, 2014; Agência Marinha de Notícias, L. Guimarães, A retórica e o cofre, 14/10/2025

    Era 7 2008 to 2026

    An S&T system and industrial sovereignty

    From three isolated institutes to a system of 18, as submarines, missiles and frigates come to be built in Brazil.

    The Navy S&T Secretariat is created in 2008 with three institutes, becomes a sectoral directorate in 2012 and DGDNTM in 2016, taking over PROSUB and the Nuclear Program. NIT-MB (2009), AMAZUL (2012) and CTMRJ (2016) follow. By 2026 the system has 18 institutions.

    The agreement with France (2008) creates PROSUB: Riachuelo is launched in 2018 and all four conventional submarines are afloat by 2025. The nuclear-powered submarine is in detailed design. MANSUP has flown since 2018, and the frigate Tamandaré is commissioned in 2026.

    The UN approves the extended shelf of the Southern Region (2019) and of the Equatorial Margin (2025), and the new Ferraz Station opens in 2020.

    Why it matters. This is the era in which this showcase exists: intellectual property, technology transfer and open innovation become part of the mission.

    Photograph of two submarines side by side in a shipyard, one on the launch platform with green and yellow bunting, the other with the number S42 on its hull.
    Launch of the submarine Almirante Karam and delivery of the submarine Tonelero (S42) at Itaguaí, Rio de Janeiro, 26 November 2025.Brazilian Navy (official Flickr mboficial). CC BY-SA 4.0 processed image

    The submarine will be conventionally armed and will use low-enriched uranium. It does not pose proliferation risk.

    Delegação do Brasil, XI Conferência de Exame do TNP, Comitê Principal II, 2026-05-05DocumentDeclaração do Brasil, Comitê Principal II, XI Conferência de Exame do TNP, 05/05/2026
    The 18 ICTs and where each one beganEach institute today has a documented root. The oldest dates from 1782; the newest, from this century. In 2008 the Navy had 3 recognized science and technology institutions; in 2026, 18.
    1. 1782ENRoyal Academy of Midshipmen (Lisbon; in Rio from 1808)
    2. 1808LFMMilitary Apothecary
    3. 1808DPHDMthe Academy's collection, kept by the Directorate
    4. 1876CHMHydrographic Office
    5. 1911EGNHigher Naval Course
    6. 1915CEFANNavy Sports League
    7. 1934HNMD/IPBNaval Institute of Biology
    8. 1959IPqMIPqM founded (proposed in 1953)
    9. 1971IEAPMCabo Frio Project (1956 expedition)
    10. 1971CTecCFNMarine Corps Special Repair and Supply Center
    11. 1975CASNAVDecree 75,335
    12. 1979CTMSPNavy Nuclear Program (COPESP, 1986)
    13. 2008DGDNTMNavy Secretariat for Science, Technology and Innovation
    14. 2012AMAZULLaw 12,706
    15. 2016CTMRJOrdinance 308/MB

    OCM, DDNM and CPSN: date of origin not yet confirmed in a public source.

    Recognized ICTs

    2008: 3; 2014: 8; 2026: 183200882014182026

    Sources DGDNTM, Sistema de CT&I da Marinha; Dall'Agnol et al., Revista da EGN, v. 22, n. 2, 2016; Introdução à História Marítima Brasileira, DPHDM, 2025

    The nuclear submarine and its public forecastsThe conventionally armed, nuclear-powered submarine is under development. Published forecasts have shifted over the program; each one is shown below with its date and source. This page does not project a date.
    • announced
    • forecast
    2008: 2025 (delivery in the original plan); 2020: 2033 (submarine forecast, December 2020); 2026: 2037 (launch forecast, March 2026)2026, today20052010201520202025203020352040200820252020203320262037
    Milestones 22
    1. 2008

      The Navy S&T Secretariat is created

      Order No. 115/MB creates the Navy S&T Secretariat with three institutes: CASNAV, IEAPM and IPqM. It is the start of the system that brings together 18 Navy S&T institutions in 2026.

      InstitutionsDGDNTM CASNAV IEAPM IPqM

      Source (1)

      DGDNTM, Histórico

    2. 2008

      Agreement with France creates PROSUB

      Days after the National Defense Strategy adopts the nuclear-powered submarine project, Brazil and France sign an agreement for conventional submarines, a nuclear one and the Itaguaí complex.

      SubmarinesNuclearShipbuildingCPSN AMAZUL CTMSP

      Sources (3)

      Decreto nº 6.703, de 18/12/2008 (Estratégia Nacional de Defesa); Câmara dos Deputados, Relações Exteriores aprova acordo sobre submarinos com a França; PROSUB, Institucional

    3. 2009

      The Navy Technology Innovation Office is created

      NIT-MB is set up to comply with the Innovation Law. The Navy's first intellectual property course, held in October and November, has more than 50 students.

      InstitutionsDGDNTM

      Source (1)

      Pesquisa Naval, Informativo de CT&I da Marinha, ano I, nº 1

    4. 2009

      The Blue Amazon Management System is proposed

      The Navy proposes SisGAAz. Halted in 2015 for lack of funds, it gets a pilot project built on Project Scua, developed by IPqM and tested in 2017.

      ComputingBlue AmazonIPqM CASNAV DGDNTM

      Source (1)

      Braga, Projeto piloto do SisGAAz, parte II, RMB, 2º trim. 2021

    5. 2012

      Fire destroys Ferraz Station

      Fire destroys 70% of the Antarctic station and two service members die. A new station would open on the same site in 2020.

      Antarctica

      Sources (2)

      Agência Marinha de Notícias, Estação Antártica Comandante Ferraz completa 41 anos; SECIRM, Reinauguração da EACF

    6. 2012

      AMAZUL is authorized

      Law No. 12,706 authorizes Amazônia Azul Tecnologias de Defesa, a state-owned company spun off from EMGEPRON with the assets of the Navy Nuclear Program.

      NuclearInstitutionsAMAZUL

      Source (1)

      Lei nº 12.706, de 08/08/2012

    7. 2016

      The Navy Technology Center in Rio is created

      Order No. 308/MB creates CTMRJ, activated in April 2017, which brings CASNAV, IEAPM and IPqM under one command.

      InstitutionsCTMRJ CASNAV IEAPM IPqM

      Source (1)

      CTMRJ, Histórico

    8. 2016

      The S&T Secretariat becomes DGDNTM

      Decree No. 8,900 turns the S&T Secretariat, a sectoral directorate since 2012, into DGDNTM, which takes over PROSUB and the Nuclear Program.

      InstitutionsDGDNTM

      Source (1)

      DGDNTM, Histórico

    9. 2018

      First MANSUP launch

      The corvette Barroso fires the first prototype of Brazil's anti-ship missile, a project started in 2008 with Omnisys, Fundação Ezute and SIATT. Further launches follow in 2019, 2022 and 2023.

      Weapons and sensorsIPqM

      Sources (2)

      Ministério da Defesa, Marinha lança terceiro protótipo do MANSUP, 11/07/2019; Agência Marinha de Notícias, MANSUP avança em processo de qualificação

      Photograph from a ship's deck: a missile leaves its launcher in a cloud of white smoke and climbs over the sea, with the ship's masts and antennas on the left.
      Launch of the national surface anti-ship missile MANSUP from the frigate Constituição in 2022, at the start of its qualification phase.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
    10. 2018

      The submarine Riachuelo is launched

      PROSUB's first submarine is launched at Itaguaí. Building in Brazil, with technology transfer, is at the core of the program.

      SubmarinesShipbuildingCPSN AMAZUL

      Source (1)

      Ministério da Defesa, Marinha lança ao mar submarino Riachuelo, 15/12/2018

      Photograph of a submarine on the surface in front of Sugarloaf Mountain, its dark sail and hull against the blue sea.
      Submarine Riachuelo (S40), the first of the PROSUB programme, at the entrance to Guanabara Bay on 6 September 2022, the year she was commissioned.Brazilian Navy (official Flickr mboficial). CC BY-SA 2.0 processed image
    11. 2019

      UN approves the Southern Region shelf

      The Commission approves the southern margin, adding about 170,000 km² beyond 200 nautical miles to Brazil's continental shelf.

      Blue AmazonHydrographyCHM

      Source (1)

      SECIRM, LEPLAC

    12. 2020

      The new Ferraz Station opens

      On the site of the old one, the new station opens with 17 laboratories after modular pre-assembly in China. During OPERANTAR XLIV (2025-2026) it hosts 185 researchers and 26 projects.

      Antarctica

      Sources (2)

      SECIRM, Reinauguração da EACF; Agência Marinha de Notícias, OPERANTAR XLIV reforça pesquisa científica

    13. 2020

      The submarine Humaitá is launched

      PROSUB's second submarine is launched and joins the operational fleet in January 2024. At the launch, the published target for the nuclear submarine was 2033.

      SubmarinesCPSN AMAZUL

      Sources (2)

      Agência Brasil, lançamento do submarino Humaitá, 11/12/2020; Agência Marinha de Notícias, primeira atracação de submarino da classe Riachuelo em Mocanguê, 04/04/2024

    14. 2021

      CASNAV turns boats into uncrewed vehicles

      CASNAV begins converting conventional boats into remotely operated surface vehicles. The technology is offered in this showcase as PRISMA.

      ComputingCASNAV

      In the Showcase today PRISMA

      Source (1)

      CASNAV, Histórico

    15. 2022

      Riachuelo enters service

      Riachuelo is commissioned into the operational fleet, PROSUB's first delivery.

      SubmarinesCPSN AMAZUL

      Source (1)

      Ministério da Defesa, Cerimônia marca incorporação do submarino Riachuelo, 01/09/2022

    16. 2024

      Nuclear submarine in detailed design

      The Navy reports that the conventionally armed nuclear submarine Álvaro Alberto is in detailed design and that construction of the hull qualification section has begun. Only its propulsion is nuclear.

      NuclearSubmarinesCTMSP AMAZUL CPSN DGDNTM

      Source (1)

      Agência Marinha de Notícias, avanços do submarino nuclear Álvaro Alberto na Voz do Brasil, 31/10/2024

    17. 2024

      Naval heritage becomes an S&T institution

      Order No. 233/EMA recognizes DPHDM as an S&T institution in archaeology, archival science, library science, museology and history.

      InstitutionsEducationDPHDM

      Source (1)

      DPHDM, Histórico da DPHDM

    18. 2025

      UN approves the Equatorial Margin

      About 360,000 km² are added to the continental shelf, with the decision published on March 26. The Eastern and Southern margins remain under review.

      Blue AmazonHydrographyCHM

      Source (1)

      SECIRM, LEPLAC

    19. 2025

      Tonelero delivered and Almirante Karam launched

      At Itaguaí, Tonelero is commissioned and Almirante Karam, the last of PROSUB's four conventional submarines, is launched. In 2026 it completes its static dive test.

      SubmarinesCPSN AMAZUL

      Sources (2)

      Agência Marinha de Notícias, Marinha lança ao mar o Almirante Karam e entrega o Tonelero, 26/11/2025; Agência Marinha de Notícias, Submarino Almirante Karam conclui imersão estática, 29/09/2026

    20. 2026

      The frigate Tamandaré is commissioned

      Launched at Itajaí in 2024, the frigate joins the fleet. The program, run by the Águas Azuis consortium (TKMS, Embraer and Atech), involves about 8,000 workers and over 1,000 companies.

      ShipbuildingIPqM

      Sources (3)

      Agência Marinha de Notícias, Fragata Tamandaré é incorporada à Esquadra; Agência Marinha de Notícias, Fragata Tamandaré chega pela primeira vez ao Rio de Janeiro; Agência Marinha de Notícias, Marinha inicia construção da quarta fragata da classe Tamandaré

    21. 2026

      The nuclear submarine at the NPT Review Conference

      Brazil states that the submarine will be conventionally armed and use low-enriched uranium, and that it has consulted the IAEA and ABACC since 2022 on special verification procedures.

      NuclearCTMSP DGDNTM

      Sources (2)

      Declaração do Brasil, Comitê Principal II, XI Conferência de Exame do TNP, 05/05/2026; AIEA, GOV/INF/2024/13, 15/11/2024

    22. 2026

      MANSUP maximum-range test

      In the fifth phase of qualification tests, the frigate Defensora fires the missile about 300 km off Cabo Frio.

      Weapons and sensorsIPqM

      Source (1)

      Agência Marinha de Notícias, MANSUP avança em processo de qualificação

    03 / Sources and collections

    Where each piece of information comes from

    Every statement on this page has a public source. Images come from openly licensed or public domain collections and were processed for the site; full credits are below and on the institutional page.

    Quote labels: Document (read in the primary source), Record (reliable secondary source), Attributed (circulates without a located primary source).

    Documents and bibliography 110
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    2. "Evolução da Força de Submarinos". Revista do Clube Naval
    3. "O Navio de Pesquisa Hidroceanográfico Vital de Oliveira". Revista Marítima Brasileira
    4. "Vice-Admiral de Aquino". Journal of Navigation, v. 7, n. 2, abr. 1954, p. 135
    5. ABACC, About ABACC
    6. Academia Nacional de Medicina, "Joaquim Candido Soares de Meirelles"
    7. Agência Brasil, 11/12/2020
    8. Agência Marinha de Notícias, 31/10/2024, avanços do submarino nuclear Álvaro Alberto
    9. Agência Marinha de Notícias, Estação Antártica Comandante Ferraz completa 41 anos
    10. Agência Marinha de Notícias, Fragata Tamandaré chega pela primeira vez ao Rio de Janeiro
    11. Agência Marinha de Notícias, Fragata Tamandaré é incorporada à Esquadra
    12. Agência Marinha de Notícias, L. Guimarães, A retórica e o cofre, 14/10/2025
    13. Agência Marinha de Notícias, MANSUP avança em processo de qualificação
    14. Agência Marinha de Notícias, Marinha inicia construção da quarta fragata da classe Tamandaré
    15. Agência Marinha de Notícias, Marinha lança ao mar o Almirante Karam e entrega o Tonelero, 26/11/2025
    16. Agência Marinha de Notícias, OPERANTAR XLIV reforça pesquisa científica
    17. Agência Marinha de Notícias, primeira atracação de submarino da classe Riachuelo em Mocanguê, 04/04/2024
    18. Agência Marinha de Notícias, Submarino Almirante Karam conclui imersão estática, 29/09/2026
    19. AIEA, GOV/INF/2024/13, 15/11/2024
    20. Arsenal de Marinha do Rio de Janeiro, Histórico
    21. BBC News Brasil, 31/03/2026
    22. Bohrer, A DHN retratada pela filatelia, Revista do Clube Naval nº 415
    23. BRAGA, C. C. "28 de Março, Dia das Comunicações Navais: Vice-Almirante Tácito Reis de Moraes Rego, Patrono das Comunicações Navais". Revista Marítima Brasileira, 1º trim. 2014
    24. Braga, Projeto piloto do SisGAAz, parte II, RMB, 2º trim. 2021
    25. CASNAV, Histórico
    26. CEFAN, Histórico
    27. Centro de Auxílios à Navegação Almirante Moraes Rego, heráldica (captura de 27/01/2025 no Internet Archive)
    28. CGCFN, Carta de Serviços ao Usuário do CTecCFN
    29. CHM, Histórico
    30. CNEN, apostila "A Energia Nuclear e suas Aplicações"
    31. CNPq, O Almirante
    32. Comando da Força Aeronaval, Histórico
    33. Constituição da República Federativa do Brasil de 1988
    34. CPDOC/FGV, DHBB, verbete "Álvaro Alberto da Mota e Silva"
    35. CTMRJ, "Marinha do Brasil promove Centenário de nascimento do Vice-Almirante Paulo Moreira" (captura de 16/04/2021 no Internet Archive)
    36. CTMRJ, Histórico
    37. CTMSP, Enriquecimento
    38. CTMSP, Programa Nuclear da Marinha
    39. CTMSP, Quem somos
    40. Câmara dos Deputados, Relações Exteriores aprova acordo sobre submarinos com a França
    41. Dall'Agnol et al., Revista da EGN, v. 22, n. 2, 2016
    42. Declaração do Brasil, Comitê Principal II, XI Conferência de Exame do TNP, 05/05/2026
    43. Decreto nº 1.065, de 24/02/1994 (Acordo Quadripartite)
    44. Decreto nº 12.167, de 23/08/1916
    45. Decreto nº 2.864, de 07/12/1998 (TNP)
    46. Decreto nº 6.113, de 2 de fevereiro de 1876
    47. Decreto nº 6.703, de 18/12/2008 (Estratégia Nacional de Defesa)
    48. Decreto nº 74.055, de 13/05/1974, art. 1º
    49. Decreto nº 77.070, de 21 de janeiro de 1976
    50. Decreto nº 86.830, de 12/01/1982
    51. Decreto nº 9.916, de 04/04/1888
    52. Decreto nº 91.124, de 13 de março de 1985
    53. Decreto nº 93.439, de 17/10/1986
    54. Decreto nº 98.145, de 15/09/1989
    55. DGDNTM, Instituto de Pesquisas da Marinha: uma história de conquistas, Revista do Clube Naval nº 402, 2022
    56. DGDNTM, Sistema de CT&I da Marinha
    57. DHBB/CPDOC, verbete Álvaro Alberto da Mota e Silva
    58. DHN, ex-diretores (captura de 19/08/2026 no Internet Archive)
    59. Diretoria de Engenharia Naval, "Resumo Biográfico do CA(EN) João Cândido Brazil" (captura de 13/12/2024 no Internet Archive)
    60. DPHDM, "Vice-Almirante Felinto Perry" (biografia)
    61. DPHDM, Histórico da DPHDM
    62. Escola de Guerra Naval, Histórico
    63. Escola Naval, A História da EN
    64. FERREIRA, A. M. "Aula inaugural para a 77ª turma do CAHO". Anais Hidrográficos, LXXXI (2024), p. 11-12
    65. FGV CPDOC, Dicionário Histórico-Biográfico Brasileiro, verbete "GUIMARÃES, Protógenes"
    66. GOTAÇ, P. R. "Almirante Álvaro Alberto: docente, empreendedor e político". Revista Marítima Brasileira, 4º trim. 2022
    67. Hospital Naval Marcílio Dias, Histórico
    68. IEAPM, Histórico do IEAPM
    69. IEAPM, página histórica (captura de 11/07/2025 no Internet Archive)
    70. INB, "O que é o enriquecimento"
    71. INB, História
    72. INB, INB finaliza primeira fase de usina de enriquecimento de urânio, 21/11/2022
    73. InfoCIRM, estação do Arquipélago de São Pedro e São Paulo
    74. Instituto de Pesquisas da Marinha, Histórico
    75. Introdução à História Marítima Brasileira, 2ª ed., DPHDM, 2025, p. 112-113
    76. Kassenova, Brazil's Nuclear Kaleidoscope, Carnegie Endowment, 2014
    77. Laboratório Farmacêutico da Marinha, Histórico
    78. Lei nº 1.310, de 15 de janeiro de 1951
    79. Lei nº 12.706, de 08/08/2012
    80. Lei nº 8.617, de 04/01/1993
    81. LIMA JUNIOR, A. R. P. "Hidrografia! Hidrografia!". Revista Marítima Brasileira, 4º trim. 2014
    82. LIMA, S. C. S. "Joaquim Candido Soares de Meirelles: um médico negro na Corte Imperial (1797-1868)". Revista da ABPN, v. 12, 2020, p. 337
    83. Marine Regions, World EEZ v12 (MRGID 8464 e 8381)
    84. Marinha do Brasil, página "Patrono" (captura de 14/08/2026 no Internet Archive)
    85. Martins, Institucionalização do serviço hidrográfico e oceanográfico brasileiro, 1931-1942, RMB, 3º trim. 2011
    86. Memória CNEN, Cronologia Brasil
    87. Ministério da Defesa, Cerimônia marca incorporação do submarino Riachuelo, 01/09/2022
    88. Ministério da Defesa, Marinha lança ao mar submarino Riachuelo, 15/12/2018
    89. Ministério da Defesa, Marinha lança terceiro protótipo do MANSUP, 11/07/2019
    90. Natural Earth, Admin 0 Countries 1:10m e 1:50m, Land 1:10m, Antarctic Ice Shelves 1:10m
    91. Patti, Origins and Evolution of the Brazilian Nuclear Program (1947-2011), Wilson Center
    92. Pesquisa FAPESP, ed. 79, set. 2002, "50 anos do CNPq"
    93. Pesquisa Naval, Informativo de CT&I da Marinha, ano I, nº 1
    94. Planalto, PROSUB, 27/03/2024
    95. Pontes Lima Junior, Hidrografia! Hidrografia!, RMB, 4º trim. 2014
    96. PROSUB, Institucional
    97. Revista do Clube Naval nº 414 (radiotelegrafia)
    98. ROBBA, O. R. "Ciência e território na trajetória de Antônio Luís von Hoonholtz". Navigator, v. 20, n. 40, 2024
    99. ROBERTO, E. G. "O centenário da Diretoria de Aeronáutica da Marinha". Revista Marítima Brasileira
    100. Rodrigues, A Amazônia Azul sob a perspectiva da economia política do mar, Revista da EGN v. 27, n. 3
    101. SANTOS FILHO, P. G. "Mais uma marca da Escola Naval". Revista de Villegagnon, 2021/2022
    102. SECIRM, Estação Antártica Comandante Ferraz
    103. SECIRM, Institucional
    104. SECIRM, LEPLAC
    105. SECIRM, reinauguração da Estação Antártica Comandante Ferraz
    106. SECIRM/PROANTAR, "In memoriam" (captura de 09/10/2025 no Internet Archive)
    107. Senado Federal, notas taquigráficas da 201ª Sessão Especial, 22/10/2019
    108. Vaisburd, "Yes, o Brasil tem Cobra", COPPE/UFRJ, 1999
    109. Vogt, Revista Marítima Brasileira, 1º trim. 2015
    110. Wikidata Q683143, Estação Antártica Comandante Ferraz, coordenada (P625)
    Images 29
    • Álvaro Alberto Agência Nacional, Arquivo Nacional, Fundo Agência Nacional (BR_RJANRIO_EH_0_FOT_PPU_08657_0001), 1951. Public domain. original. Cropped (from 0.0% to 100.0% of the width and from 0.0% to 92.6% of the height of the original); resized to 320, 500 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Baron of Teffé Marc Ferrez (1843-1923), Biblioteca Nacional (BN Digital), 1883. Public domain. original. Cropped (from 0.0% to 100.0% of the width and from 0.8% to 93.2% of the height of the original); resized to 320, 570 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Radler de Aquino Unidentified author, Dias, Arthur. O Brazil Actual. Rio de Janeiro: Imprensa Nacional, 1904 (Internet Archive), 1904. Public domain. original. Cropped (from 6.0% to 94.0% of the width and from 0.0% to 86.6% of the height of the original); resized to 320, 529 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Hydrographic chart of Laguna, 1864 Antonio Luiz von Hoonholtz (1837-1931), Bibliothèque nationale de France, 1864. Public domain. original. Cropped (from 4.0% to 96.0% of the width and from 18.6% to 65.4% of the height of the original); resized to 960, 1600, 2400 px wide; tonal inversion (negative), so the paper turns dark and the linework light; converted to grayscale with levels from 4% to 96% and a blue and gold duotone (#050D2A, #0A1748 and #FAB932); AVIF, WebP and JPEG compression with metadata removed..
    • Ships off Villegagnon Leandro Joaquim (c. 1738-1798), Museu Histórico Nacional, fim do século XVIII. Public domain. original. Cropped (from 13.0% to 87.0% of the width and from 22.5% to 89.5% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Atlas from the Royal Navy Academy Brazilian Navy (official Flickr mboficial), 2019 (obra de 1784). CC BY-SA 2.0. original. Cropped (from 0.0% to 89.7% of the width and from 0.0% to 100.0% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Rio seen from the anchorage, 1821 John Heaviside Clark (1771-1863), after a drawing by Henry Chamberlain (1796-1843), Biblioteca Nacional, via Brasiliana Iconográfica, 1821. Public domain. original. Cropped (from 3.0% to 97.0% of the width and from 27.0% to 75.0% of the height of the original); resized to 960, 1600, 2400 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Navy Arsenal, 1856 Pieter Godfred Bertichen (lithograph by Rensburg), Collection Brasiliana Itaú, via Brasiliana Iconográfica, 1856. Public domain. original. Cropped (from 19.0% to 81.0% of the width and from 27.4% to 84.5% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Chart of Rocas Atoll, 1858 (facsimile) Manoel Antônio Vital de Oliveira (1829-1867), Biblioteca Nacional Digital do Chile, 1858. Public domain. original. Resized to 1200, 2400 px wide; original colours kept; AVIF, WebP and JPEG compression with metadata removed..
    • Launch of the Sete de Setembro, 1874 Unidentified author, Brasiliana Iconográfica, 1874. Public domain. original. Cropped (from 5.0% to 95.0% of the width and from 5.8% to 84.2% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Hydrographic chart of Laguna, 1864 (facsimile) Antonio Luiz von Hoonholtz (1837-1931), Bibliothèque nationale de France, 1864. Public domain. original. Resized to 1200, 2400 px wide; original colours kept; AVIF, WebP and JPEG compression with metadata removed..
    • Ilha Fiscal seen from Ilha das Cobras Unidentified author, Instituto Moreira Salles, c. 1880-1890. Public domain. original. Cropped (from 3.5% to 96.5% of the width and from 11.7% to 88.3% of the height of the original); resized to 960, 1600, 2400 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Launch of the Minas Geraes, 1908 Bain News Service, Library of Congress, Bain Collection, via National Museum of the U.S. Navy, 1908. Public domain. original. Cropped (from 2.0% to 98.0% of the width and from 7.8% to 92.2% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Submarine F1, Foca class Brazilian Navy (official Flickr mboficial), c. 1914-1933. CC BY-SA 2.0. original. Cropped (from 0.5% to 99.5% of the width and from 0.0% to 100.0% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Seaplane of the Campos raid, 1917 Brazilian Navy (official Flickr mboficial), 1917. CC BY-SA 2.0. original. Cropped (from 0.0% to 100.0% of the width and from 1.9% to 100.0% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • HU-1 Squadron, 1960s Brazilian Navy (official Flickr mboficial), década de 1960. CC BY-SA 2.0. original. Cropped (from 0.0% to 100.0% of the width and from 11.5% to 100.0% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Navy Research Institute Unidentified author, Casa de Oswaldo Cruz (Fiocruz), coleção Dyrce Lacombe, sem data. CC BY-SA 4.0. original. Cropped (from 3.5% to 96.5% of the width and from 5.4% to 94.6% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 4.0)..
    • Carrier Minas Gerais, 1968 U.S. Navy (cruise book do USS America), 1968. Public domain (US Government work). original. Cropped (from 0.0% to 100.0% of the width and from 0.6% to 99.4% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Launch of the frigate União Brazilian Navy (official Flickr mboficial), década de 1970. CC BY-SA 2.0. original. Cropped (from 0.0% to 100.0% of the width and from 0.0% to 87.7% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Comandante Ferraz Station, 2011 Brazilian Navy (official Flickr mboficial), 2011-11-01. CC BY-SA 2.0. original. Cropped (from 0.0% to 90.8% of the width and from 0.0% to 100.0% of the height of the original); resized to 960, 1600, 2400 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • New Comandante Ferraz Station, 2020 Brazilian Navy (official Flickr mboficial), 2020-01-12. CC BY-SA 2.0. original. Resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Corvette Inhaúma Brazilian Navy (official Flickr mboficial), 2005-06-21. CC BY-SA 2.0. original. Resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Submarine Tamoio Brazilian Navy (official Flickr mboficial), 2006-08-14. CC BY-SA 2.0. original. Cropped (from 0.1% to 99.9% of the width and from 0.0% to 100.0% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Ary Rongel in Antarctica, 2004 Brazilian Navy (official Flickr mboficial), 2004-01-04. CC BY-SA 2.0. original. Cropped (from 0.1% to 99.9% of the width and from 0.0% to 100.0% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Aramar Experimental Center IAEA Imagebank (Flickr), 2021-07-17. CC BY 2.0. original. Resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed..
    • Launch of the submarine Tikuna Brazilian Navy (official Flickr mboficial), década de 2000. CC BY-SA 2.0. original. Cropped (from 1.1% to 98.9% of the width and from 0.0% to 100.0% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Almirante Karam and Tonelero, 2025 Brazilian Navy (official Flickr mboficial), 2025-11-26. CC BY-SA 4.0. original. Resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 4.0)..
    • MANSUP launch, 2022 Brazilian Navy (official Flickr mboficial), 2022. CC BY-SA 2.0. original. Cropped (from 7.3% to 100.0% of the width and from 0.0% to 100.0% of the height of the original); resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..
    • Submarine Riachuelo Brazilian Navy (official Flickr mboficial), 2022-09-06. CC BY-SA 2.0. original. Resized to 480, 800, 1200 px wide; converted to grayscale with levels from 4% to 96% and a blue monotone (#050D2A to #EEF1F5); AVIF, WebP and JPEG compression with metadata removed. The modified version is released under the same licence (CC BY-SA 2.0)..