There is a hydrographic office attached to the bureau of navigation, which prepares maps, charts and nautical books relating to navigation, and makes investigations concerning marine meteorology.
"Government and Administration of the United States"
Westel W. Willoughby and William F. Willoughby
I know you have the official hydrographic charts, but there's a mistake, I'm sure.
"Tom Swift and his Undersea Search or, The Treasure on the Floor of the Atlantic"
Victor Appleton
At this point in his estimate the commander utilizes his charts, intelligence reports, and hydrographic publications to make a factual study of the theater.
"Sound Military Decision"
U.s. Naval War College