Information Services to give the knowledge regarding meteorological and hydrographical situations etc. The son Alexander George Findlay devoted himself to the compilation of geographical and hydrographical works. During this time she marked about 3,000 whales and completed biological, hydrographical and oceanographic studies. Numerous rivers cross Loreto's territory, all of which are part of the Amazonian Hydrographical System. In 1866, he was knighted for his hydrographical services. La Monne is part of a hydrographical whole, draining les monts Dore. Conduct hydrographical surveys and provide oceanographic information. The Hydrographer of the Navy is the principal hydrographical Royal Naval appointment. Other specific, especially hydrographical arrangements are also in use. Ilyamna' (Big Ilyamna Lake) on the Russian Hydrographical Department's Chart 1455, published in 1852. Geographically and hydrographical the Neretva is divided in three section. Hydrographical measurements include the tidal, current and wave information of physical oceanography.