Noun
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.
Source: Webster's dictionaryIn 1819 the island of Funafuti was named Ellice's Island; the name Ellice was applied to all nine islands after the work of English hydrographer Alexander George Findlay (1812–1876). Source: Internet
Captain Daniel Ross was a well known hydrographer of the Navy of Government of English Bengal and founder of the Bombay Geographical Society. Source: Internet