Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Deck General (Set 137)
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Question 1 of 30
While drilling ahead with 60 foot draft, the DEEP DRILLER encounters lost circulation and loses 900 Bbls. of 16 pounds per gallon mud to the hole. How much ballast must be taken on to maintain 60 foot draft?
Browse Questions in Set 137
30 MCQs #1 While drilling ahead with 60 foot draft, the DEEP DRILLER encounters lost circulation and loses 900 Bbls. of 16 pounds per gallon mud to the hole. How much ballast must be taken on to maintain 60 foot draft? #2 The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). If the maximum permissible deck load were placed aboard at a VCG of 130 feet, what would be the new draft? #3 How much non-liquid deck load can the DEEP DRILLER, loaded as shown in the sample Load Form #4 (Drilling), accept if the weight is placed at a VCG of 130 feet? Ballast added or discharged to maintain draft at 60 feet is done so at 10 feet. #4 Adding the FSCL to KG yields __________. #5 While the DEEP DRILLER is loaded as shown in Sample Form #4 (Drilling), casing is accidentally dropped over the starboard side. Because the sounding level and starboard inclination are rapidly increasing, you decide that tank 1S is damaged. Your best countermeasure is to __________. #6 The DEEP DRILLER is loaded as shown in the Sample Load Form #3 (Preparing to Drill). If all the liquid mud (see table 8) is dumped, what would be the new draft? #7 When a MODU is inclined at a small angle, the center of buoyancy will __________. #8 Fighting a rig fire in a watertight compartment with hoses could reduce the stability of the rig by __________. #9 Control of flooding on a MODU should be addressed __________. #10 While loaded as shown in the Sample Load Form #4 (Drilling), all of the liquid mud is dumped. What would be the new draft? #11 A semisubmersible at a draft of 19 feet 9 inches arrives on location planning to deploy eight mooring lines. Each anchor weighs 15 long tons and each mooring line consists of 3,000 feet of 3-inch chain (89.6 lbs/ft). If no ballast corrections are made, what is the expected draft if the average TPI is 60? #12 A semisubmersible in transit is at a draft of 19 feet. The depth of the lower hulls is 21 feet. How much bunker fuel at 54.0 lbs/cu ft could be taken on and still provide one foot of freeboard if the TPI is 52.3? #13 The DEEP DRILLER, loaded as shown in Sample Load Form #2 (Ballast to Survival), suffers major damage which results in flooding in tank 1S. Your best countermeasure is to __________. #14 A semisubmersible, 200 feet in length between draft marks with the LCF 10 feet aft of amidships, records the following drafts: Port Forward 64'-09"; Port Aft 68'-09"; Starboard Forward 59'-09"; and Starboard Aft 63'-09". What is the list? #15 With no environmental forces on the DEEP DRILLER, the average of the forward drafts is 61.0 feet, and the average of the aft drafts is 59.0 feet. KGL is 51.13 feet. What is the value of LCG? #16 For a MODU with trim, an increase in GMT will cause the inclination to __________. #17 A MODU with the TCG off the longitudinal centerline inclines to an angle of __________. #18 In the DEEP DRILLER, LCG is obtained from the sum of the longitudinal moments by __________. #19 A semisubmersible with a positive GM, and TCG located starboard of the centerline, inclines to an angle of __________. #20 A semisubmersible displacing 700,000 cubic feet while floating in sea water (64 pounds per cubic foot) weighs __________. #21 A quick and rapid motion of a MODU in a seaway is an indication of a(n) __________. #22 One way to increase the period of roll on a semisubmersible rig while under tow is to __________. #23 On a semisubmersible drilling unit, increasing riser tension increases __________. #24 A semisubmersible which will not remain upright and will assume a list either to port or starboard is likely to have __________. #25 Semisubmersibles A and B are identical. However, "A" is more tender than "B". This means that "A" relative to "B" has a __________. #26 In the analysis of damaged stability for the DEEP DRILLER, disregarded are the beneficial effects of moorings and __________. #27 Progressive flooding on a MODU may be indicated by __________. #28 The DEEP DRILLER, loaded as shown in Sample Load Form #4 (Drilling), suffers major damage which results in flooding in tank C1P. Your best countermeasure is to __________. #29 In the DEEP DRILLER, VCG is obtained from the sum of the vertical moments by __________. #30 On a semisubmersible drilling unit, decreasing riser tension reduces __________.
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