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Towing Vessel Officer's Guide
A Supplement to the Limited Mater, Mate and Operator Course For Apprentice Mate/Steersman License Preparation. Edited by: Richard A. Block BK-0276-1 Merchant Marine Deck Examination Reference Material Reprints from the Tide Tables and Tidal Current Tables. USCG. 1983. COMDTPUB P16721.46. ISBN: 0-9710408-89-3
