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60 Years of the Instituto Hidrográfico
60 Years of the Instituto Hidrográfico
1941 - Angola and São Tomé Hydrographic Mission, Bába Bay.
‘Sines December 84 coal-wetting operation’
Determination of dissolved oxygen in water aboard the NRP Almeida Carvalho. Early 1980s (1982).
‘Tidal and limbnigraph scale, Metangula – Lake Niassa, Mozambique 1959.’
‘Flutuator used for measuring currents ...’. Hydrographic Mission Adjacent Islands, N. H. Carvalho Araujo, September 1937
Change of camp from the ground brigade. Madeira Island, July/August 1937.
“Reading of ‘invar’ wire in intermediate iron tube”. Geodetic Mission S. Tomé Island. CMG Gago Coutinho, Head of Mission 1915-1918.
Launch of a “Batitermograph”. Photo was taken aboard the NRP “Almeida Carvalho” in the 1970s.
“Read of the Praises” on 14 November 1963. Take over the post of DG IH, Rear Admiral João Xavier Ramalho Rosa.
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