“Hydrographic Notices, Pacific Ocean,” 1856 to 1873 (p. 106).
The hydrographic feature of greatest importance is the Humboldt Current.
A hydrographic sheet is prepared on which all the points are plotted which will be useful.
From 1866 to 1879 it was the hydrographic office of the Navy Department.
The originals of these surveys form part of the most precious possessions of the Hydrographic Office of the Admiralty.
To establish this fact will be to solve the last problem of the hydrographic system of Africa.
Extensive and much-needed soundings have been made for hydrographic purposes and to fix the proper routes of ocean telegraphs.
This information was sent out again as a daily ice warning to merchant vessels by the Hydrographic Bureau.
Out of this giants missile the Italian authorities have made them a geodetic survey and hydrographic station.
The British admiralty charts are compiled, drawn and issued by the hydrographic office.