Proceedings Of The Marine

FAL 2012

Proceedings magazine is a communication tool for the Coast Guard's Marine Safety & Security Council. Each quarterly magazine focuses on a specific theme of interest to the marine industry.

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Nautical Deck Queries Prepared by NMC Deck Examination Team 1. Both International and Inland: Which vessel may use the danger signal? $ (LWKHU YHVVHO LQ D PHHWLQJ VLWXDWLRQ % 7KH JLYH ZD\ YHVVHO LQ D FURVVLQJ VLWXDWLRQ & $ YHVVHO DW DQFKRU ' $OO RI WKH DERYH 2. The great circle distance from Lat 25° 50' N, Long 77° 00' W to Lat 35° 56' N Long 06° 15' W is 3616 miles, and the initial course is 061.7° T. Determine the latitude of the vertex. $ ° ° ° 1 % ° 1 & ' 1 1 3. Which is an advantage of using watertight longitudinal divisions in double-bottom tanks? $ &XWV GRZQ IUHH VXUIDFH HIIHFW % ,QFUHDVHV WKH UROOLQJ SHULRG & 'HFUHDVHV ZHLJKW EHFDXVH H[WUD VWLIIHQHUV DUH XQQHHGHG ' /RZHUV WKH FHQWHU RI EXR\DQF\ ZLWKRXW GHFUHDVLQJ *0 4. Your vessel's draft is 16'-00" fwd. and 18'-00" aft. The MTI is 500 ft-tons. How many tons of water must be shifted from the afterpeak to the forepeak, a distance of 250 feet, to bring the vessel to an even draft forward and aft? $ % & ' WRQV WRQV WRQV WRQV Q uestions www.uscg.mil/proceedings Fall 2012 Proceedings 89

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