Mariner Forum
Engine Forum
Discussion from mariners studying for their USCG license exams.
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General Subjects: In accordance with 46 CFR 61, which of the following pressure vessels listed on...1 replies
by sboston · Feb 7, 2017
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Engineering Safety: Basic emergency care for an electrical burn is to __________.0 replies
by mpferritto · Oct 30, 2017
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Refrigeration AC: If outside air at 80 degrees F and 70 percent relative humidity is conditioned,...0 replies
by mpferritto · Oct 27, 2017
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Electricity: As shown in figures "E" and "F" of the pictured high voltage rack mounted circui...1 replies
by firesalmon · Dec 29, 2014
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General Subjects: With regard to ballast system operations associated with a dry cargo ship, what...0 replies
by andrewmillar · Oct 6, 2017
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Electricity: Given the circuit and individual AC and DC voltage waveforms shown in figure "A"...0 replies
by andrewmillar · Sep 30, 2017
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Refrigeration AC: The gas that exists in the stratosphere forming a protective shield that helps t...0 replies
by captainpirate · Sep 28, 2017
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Electricity: Which of the following statements concerning a circuit with parallel connected r...0 replies
by Aryvind · Aug 27, 2017
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Electricity: As shown in figure "C" of the illustration, what type of timer is represented? E...0 replies
by DSavoie913 · Aug 5, 2017
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Engineering Safety: The motion of a vessel impacts its stability. Which of these motions shown in th...1 replies
by btamone · Jul 12, 2017
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Electricity: What would be the capacitive reactance of the circuit shown in figure "A" of the...0 replies
by belkacem70438 · Jul 26, 2017
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General Subjects: For greater accuracy, some micrometers have a vernier scale making it possible t...0 replies
by Corumjohncorum · Jul 4, 2017
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Engineering Safety: Following cargo loading operations, your vessel is experiencing an excessive at-...3 replies
by 2bluemagnets · Jan 3, 2015
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Motor Plants and Auxiliary Boilers: A four cylinder, four-stroke cycle, single acting diesel engine has a 740 mm bor...3 replies
by gigem_das05 · May 25, 2017
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Motor Plants and Auxiliary Boilers: In a diesel engine jacket water cooler, with sea water cooling the engine jacket...3 replies
by mjusti · May 30, 2016
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Refrigeration AC: Which lettered component, shown in the illustration, indicates the location of t...0 replies
by Whatde · Mar 28, 2017
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Electricity: A shown in the illustration, which of the lighting fixtures represents an incand...2 replies
by Russjanicki · Dec 23, 2015
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Gas Turbines: Provisions for avoiding the build-up of ice on the intake air surfaces of a gas...1 replies
by MAClark · Oct 4, 2016
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Refrigeration AC: Expansion tanks when used in a ship's low temperature hot water heating system m...0 replies
by Clemmonsfd · Feb 14, 2017
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General Subjects: Of the following propulsion modes, which one would operate with a geared-drive f...1 replies
by kschmidtline · Jan 4, 2017
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Engineering Safety: You are part of a search team and have been told that the last sighting of the w...0 replies
by sboston · Jan 30, 2017
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Electricity: What will be the resulting current when a voltage of 12 VDC is applied to a capa...1 replies
by adam.klein.2011 · Sep 9, 2015
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Motor Plants and Auxiliary Boilers: If the speed of the propeller is 135 RPM, the speed of the engine camshaft shown...0 replies
by mgranger75 · Jan 11, 2017
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Steam Plants: A steam driven 750 KW turbo generator has a rated speed of 1200 RPM. The over sp...2 replies
by magnussonshred · Sep 10, 2016
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Electricity: What two factors determine the magnitude of the generated voltage of a DC genera...0 replies
by rgrayling · Dec 31, 2016