Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Deck General (Set 158)
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Question 1 of 30
While in ocean transit, the COASTAL DRILLER experiences a single amplitude roll of 5 degrees. What is the minimum roll period that does not exceed the design limits of the legs?
Browse Questions in Set 158
30 MCQs #1 While in ocean transit, the COASTAL DRILLER experiences a single amplitude roll of 5 degrees. What is the minimum roll period that does not exceed the design limits of the legs? #2 The COASTAL DRILLER, elevated in 200 feet of water, has two knots of current and 70 knot winds. With a maximum leg reaction of 5,840 kips, the maximum wave height for drilling is __________. #3 A semisubmersible floating in sea water displaces 717,500 cubic feet. What is the displacement? #4 It is vital to the safety of the elevated COASTAL DRILLER that the hull be kept above __________. #5 Use of air gaps in excess of that stated in the Limits of Elevated Service for the COASTAL DRILLER could result in __________. #6 Starboard ballast pump #1 on the DEEP DRILLER has failed. If you want to deballast from the forward-starboard column using starboard pump #2, it is necessary to open valves __________. #7 While elevated as shown in Sample Load Form #3 (Drilling), winds are 57 knots and current is 2 knots. What is the maximum wave height allowed for drilling? #8 The COASTAL DRILLER, while drilling, has a total weight of 15,400 kips. The LCG is 120.00 feet AF0, and the TCG is -0.5 feet to port of the centerline. What is the port leg reaction? #9 The COASTAL DRILLER, while drilling has a total weight of 15,435 kips. The LM are 1,975,680 ft-kips and the TM are -15,435 ft-kips. What is the starboard leg reaction? #10 The DEEP DRILLER, at 58.0 feet draft in sea water, discharges 200 long tons. What is the new draft? #11 In deballasting to survival draft because of extreme wind and wave loads, thrusters or propulsion, if available, should be used to __________. #12 For planning purposes, the time required to place the DEEP DRILLER at survival draft from the drilling mode to counter heavy weather is __________. #13 Air gap is the vertical distance between the bottom of the hull and the __________. #14 During jacking operations and transit, empty void spaces in the hull of a jack up MODU provide __________. #15 While loaded as shown in the DEEP DRILLER Sample Load Form #4 (Drilling), a severe storm threatens. What is the improvement in KGL if all the mud is dumped? #16 While on an ocean tow, the COASTAL DRILLER is threatened with the approach of a severe storm. The legs should be lowered so that the TOC (tip-of-can) is lowered from 12.38 feet to __________. #17 The COASTAL DRILLER, with a draft of 10 feet 6 inches, has a displacement of __________. #18 The lightweight longitudinal moments for the DEEP DRILLER are __________. #19 Especially in adverse weather, risk of collision with an offshore supply vessel increases when the vessel is moored to what side of the unit? #20 The COASTAL DRILLER, when underway was loaded as shown in Sample Load Form #1 (Rig Move). It is now preloaded at minimum air gap waiting for all settling to take place. The preload, weighing 7,191.7 kips, has LM 870,196 ft-kips and TM 2,158 ft-kips. What is the bow leg reaction? #21 When clear ice is present when the DEEP DRILLER is in transit, the vertical moments are increased by __________. #22 Port ballast pump #1 on the DEEP DRILLER has failed. If you want to deballast the forward-port column using port ballast pump #2, it is necessary to open valves __________. #23 If the maximum leg penetration of the COASTAL DRILLER is 75 feet, the water depth value in the Allowable Wind and Wave Charts must be increased by __________. #24 To effectively use the crossover system on the DEEP DRILLER to pump from the low side using a high side ballast pump, transverse inclinations should not exceed __________. #25 When threatened with a severe storm while operating in 250 feet of water, the COASTAL DRILLER should be placed at an air gap of __________. #26 During storm conditions on a MODU, the mooring tensions should be adjusted so that __________. #27 On the DEEP DRILLER, among the valves to open when transferring ballast from Tank 1S to Tank 10P using the #1 ballast pump is valve __________. #28 On the DEEP DRILLER, among the starboard-side valves to open when deballasting from ballast tank 2S is valve __________. #29 The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a MODU is the __________. #30 A non-symmetrical tank aboard a MODU contains 390 tons of ballast at a VCG of 9.85 feet. Ballast weighing 250 tons and a VCG of 12.0 feet is discharged. The vertical moments for the remaining ballast is __________.
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