Continuous recording apparatus, by which it is possible to obtain graphic record of contour of sea bottom over which vessel is steaming; navigating officer can thus see at glance, at any time, depth of water through which vessel is passing and record can also be used, in conjunction with chart, as aid to fixing or checking ship's position.
Admiralty-type recording echo-sounding apparatus
Engineering
Engineering ; 131 , n 3412
1931
4 pages
10 Figs.
Aufsatz (Zeitschrift)
Englisch
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