Changes related to "Category:Marine technology"
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14 April 2014
- (diff | hist) . . Fathometer; 15:31 . . (-22) . . Administrator1
- (diff | hist) . . N Fathometer; 13:11 . . (+3,425) . . Awolkoff (Created page with "== Fathometer == In 1925, the Submarine Signal Company of Boston developed the first fathometer, known as the 312 fathometer, to chart the depth of water while a ship was moving...")