Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Deck General (Set 109)
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Question 1 of 30
What is the length of the catenary when the DEEP DRILLER is anchored in 600 feet of water and the anchor line tension is 170 kips?
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30 MCQs #1 What is the length of the catenary when the DEEP DRILLER is anchored in 600 feet of water and the anchor line tension is 170 kips? #2 The DEEP DRILLER is anchoring in 600 feet of water. In the absence of environmental forces, the mooring lines should be adjusted to __________. #3 The overturning forces acting on a floating jack-up are generally dominated by __________. #4 For a semisubmersible moored in heavy weather conditions, the leeward lines should be paid out, and the windward lines adjusted so that __________. #5 During a storm, the mooring line on a MODU should be long enough so that the angle between the anchor shank and the ocean floor is __________. #6 When the air temperature is just below 32°F, snow FIRST adheres to __________. #7 It is proposed to moor the DEEP DRILLER in 600 feet of water in a region in which the effective wind velocity could reach 80 knots, significant wave height could reach 30 feet, and the current could be 1.5 knots. If these conditions occurred at the same time from the bow, the total environmental force would be __________. #8 The time required to ballast the DEEP DRILLER to survival draft, when threatened with heavy weather, while under tow, is about __________. #9 The initial tension set in the mooring system of a MODU establishes the __________. #10 In case of damage to the DEEP DRILLER on location, the immediate objective is to reduce the unexpected inclination and return the unit to __________. #11 Under extremely heavy weather on the DEEP DRILLER, when operating conditions are too severe to permit the drill string from being tripped out of the hole and laid down in the pipe racks, it may be __________. #12 In anticipation of heavy weather, it is decided to deballast the DEEP DRILLER to survival draft. The marine riser should be disconnected, pulled, and laid down. After doing so, the riser tension will be __________. #13 Why are symmetric mooring patterns frequently used to keep MODU's on station? #14 Using high working tensions in the mooring system reduces the __________. #15 The motion that can significantly increase mooring line tension is __________. #16 Given the same water depth and line tension, the holding power of a 19 pound/foot wire rope mooring system in comparison to the holding power of a 90 pound/foot chain mooring system will be __________. #17 Given the same water depth and mooring tension, the holding power of a 90 pound/foot chain mooring system in comparison to the holding power of a 19 pound/foot wire rope mooring line will be __________. #18 Given the same water depth and line tension, the length of the ground cable of a 90 pound/foot mooring chain compared to the length of the ground cable of a 19 pound/ft wire rope mooring line will be __________. #19 Given the same water depth and line tension, the catenary length of a 90 pound/foot mooring chain in comparison to the catenary length of a 19 pound/foot wire rope mooring line will be __________. #20 Consideration should be given in planning for the mooring orientation in a new location so that in adverse weather a crane is available to off-load the supply vessel on what side of the unit? #21 A weight of 1,000 kips is equivalent to __________. #22 The COASTAL DRILLER is experiencing a single amplitude roll angle of 3 degrees and a roll period of 10 seconds. What is the maximum water depth that can be used for going on location? #23 While in 150 feet water depth when the pitch angle of the COASTAL DRILLER is 1 degree, the platform pitch period for going on location should be longer than __________. #24 Leg penetration to depths which require pullout forces greater than that which can be supplied by the buoyancy of the hull may exist in __________. #25 Scouring is the result of __________. #26 When a marine surveyor is employed to assist in the move of a mobile offshore drilling unit, he __________. #27 In securing deck loads for an ocean tow, drill pipe should be __________. #28 When cargo aboard a jack-up in transit becomes adrift, the tow vessel should be asked to __________. #29 The full period of motion of the DEEP DRILLER while tripping is 10 seconds and the maximum pitch angle as seen on the inclinometers is 8 degrees. From the standpoint of critical motion, the motion is __________. #30 The full period of motion of the DEEP DRILLER while tripping is 7 seconds and the maximum pitch angle as seen on the inclinometers is 4°. From the standpoint of critical motion, the motion is __________.
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