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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89 Fall 2015 Proceedings www.uscg.mil/proceedings Prepared by NMC Deck Examination Team Nautical Deck Queries Nautical Deck Queries 1. INLAND ONLY: While underway and in sight of another power-driven vessel forward of your beam, more than 0.5 mile away, you put your engines full speed astern. Which statement concerning whistle signals is TRUE? A. You must sound three short blasts on the whistle. B. You must sound one blast if backing to starboard. C. You must sound whistle signals only if the vessels are meeting. D. You need not sound any whistle signals. 2. How is the annual rate of change for magnetic variation shown on a pilot chart? A. Gray lines on the uppermost inset chart. B. Red lines on the main body of the chart. C. In parenthesis on the lines of equal magnetic variation. D. Annual rate of change is not shown. 3. The liquid mud tanks on your vessel measure 30 feet L by 15 feet B by 6 feet D. The vessel's displacement is 968 T and the specifc gravity of the mud is 1.8. What is the reduction in GM due to two of these tanks being slack? A. .19 foot B. .42 foot C. .64 foot D. .87 foot 4. You are transiting the Straits of Mackinac by way of an improved channel. You have information that indicates that the channel's federal project depth is 28 ft. Which of the following statements is true with regard to this channel? A. The designed dredging depth of the channel is 28 ft. B. The channel has 28 ft. in the center, but lesser depths may exist in the remainder of the channel. C. The maximum depth which may be expected within the limits of the channel is 28 ft. D. The least depth within the limits of the channel is 28 ft. Q uestions