Sound: to measure depth of water by means of a lead line. Also, to measure depth of liquids in oil tanks, voids, blisters, and other compartments or tanks (The Coast Guardsman's Manual).
All images courtesy of and copyright their respective manufacturers, unless otherwise indicated, without the express written permission of whom they may not be reproduced or retransmitted in any way. All trademarks are the property of their respective owners. Model news and specifications are presented as provided by manufacturer, and do not necessarily reflect the opinions of boatingspectator.com. No warranty is made by boatingspectator.com with respect to the accuracy or timeliness of the information contained herein.
Copyright © 2006-2011 boatingspectator.com
Privacy policy