WEBVTT

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The sea...

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Blue, deep and extensive mantle…

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Which covers more than two two-thirds of the 
two-thirdsEarth's surface:

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the blue planet.

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What secrets does the sea hold?

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What to learn about it?

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And how to use it? 

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From the beginning of time, 
these questions were posed by those

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who saw in the sea more 
than a body of salt water.

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They saw that the sea was and would be 
a fundamental part of the identity of a nation:

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Portugal. 

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The Portuguese Navy unit and state laboratory 
dedicated to the research of the sea

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is the Hydrographic Institute

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 located at the Convento das Trinas and 
at the hydrographic base of Azinheira, in Seixal.

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The Hydrographic Institute is a reference 
institution for the studying of the sea.

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It studies the bodies of water and the seabed,

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to contribute to the safety of navigation, 
support naval and maritime operations

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and collaborate in the protection of the marine environment.

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On the safety of navigation

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it coordinates the network of navigational 
warnings and the notices to mariners.

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It is involved in risk analysis and the 
redrawing of inland navigational charts.

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It certifies navigation equipment,

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the production of nautical publications

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and reports in on accidents and 
incidents in the maritime environment. 

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Knowing the sea implies knowing its depth,

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its morphology,

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the matter that forms the seabed,

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and the various dangers that 
in peril the navigators.

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To accomplish this, the hydrographic 
brigades do constant surveying

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and data collection, relying 
on technology of high accuracy. 

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Forecasting the behavior of the sea is one 
of the great aims of the hydrographic Institute.

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So, it collects data permanently,

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from Navy ships and from its extensive 
country wide monitoring network. 

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Data is processed using mathematical models,

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which allows the generation of high precision 
meteo-oceanographic forecast products.

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All this knowledge is used in the 
meteorological and oceanographic naval center,

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the CMETOC,

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that supports the missions of the Navy 
and of the National Maritime Authority.

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The hydrographic Institute has a unique 
knowledge about the sediments of the sea floor,

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which allows for the construction of sedimentological 
charts and the chance to support the fishery. 

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On marine chemistry and pollution,

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the monitoring activities and the laboratorial 
support make a fundamental contribution

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to the preservation and the protection 
of the marine environment. 

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On hydrography, oceanography, navigation,

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marine geology and 
marine pollution and chemistry,

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the institute holds the largest national 
geo-referenced database on the sea.

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This knowledge, relevant to the Navy 
and the National Maritime authority,

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is made available to the 
academic and scientific community,

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as well as to the general public 
through the institute's online portal.

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The mariners shop, Loja do Navegante,

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in its physical space and online,

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distributes the cartographic products 
and the official nautical publications. 

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The hydrographic Institute 
is a living institution,

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where the instruments and techniques 
of the past merge with evolution and progress,

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to anticipate tomorrow.

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The commitment to the future is clear.

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The School of hydrography and oceanography 
is one of the foundation stones of the Institute.

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With internationally recognized courses,

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it is unique in the country and one of the few in the world.

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We want to know the sea in a clear 
commitment to research and development,

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the public service and the national defense.

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In the Navy, the Hydrographic Institute fulfills the mission:

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to know the sea so that all can use it.