(Askeri) HİDROGRAFİ: Seyrüsefer amaçlı kullanılan deniz, göl, nehir, okyanus ve bunların birleştiği kıyı sahalarının ölçülmesi, tanımlanması veya fiziksel özellikleriyle ilgilenen bilim dalı
The art of measuring and describing the sea, lakes, rivers, and other waters, with their phenomena
That branch of surveying which embraces the determination of the contour of the bottom of a harbor or other sheet of water, the depth of soundings, the position of channels and shoals, with the construction of charts exhibiting these particulars
the science of the measurement and description and mapping of the surface waters of the earth with special reference to navigation
One skilled in the hydrography; one who surveys, or draws maps or charts of, the sea, lakes, or other waters, with the adjacent shores; one who describes the sea or other waters