Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Deck General (Set 145)
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Question 1 of 30
In the COASTAL DRILLER, TCG is obtained from the sum of the transverse moments by __________.
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30 MCQs #1 In the COASTAL DRILLER, TCG is obtained from the sum of the transverse moments by __________. #2 Snow has obliterated surface features and the sky is covered with uniform, altostratus clouds. There are no shadows and the horizon has disappeared. What is this condition called? #3 What is the trim of a jack-up with forward draft of 11 feet and aft draft of 13.75 feet? #4 Before entering an ice area, the ship should be __________. #5 For operations in pack ice, a vessel should __________. #6 The COASTAL DRILLER, in ocean transit at a draft of 10 feet 6 inches with winds less than 70 knots, has a KGT of 50.6 feet and a KGL of 51.4 feet. The margin on the maximum allowable KG is __________. #7 Ice concentration is measured in tenths. What concentration range of ice corresponds to "Open Pack"? #8 Ice concentration is measured in tenths. What concentration range of ice corresponds to 1- 3 tenths? #9 The COASTAL DRILLER is loaded as shown in the Sample Load Form Number 1 (Rig Move). If the contents of the No.7 drill water tank are discharged, what would be the new TCG? #10 How much drill water should be transferred from tanks 23 and 24 to tank 1 to level the COASTAL DRILLER, in transit at a draft of 10 feet 6 inches, if the total longitudinal moments are 1,700,000 ft-kips? #11 Because there is a possibility of fuel oil being discharged overboard from a full fuel oil tank, it is decided to transfer 25 kips from tank 14 to tank 20. See COASTAL DRILLER Sample Load Form Number 1 (Rig Move). What would be the change in longitudinal moments with this transfer? #12 In general, an un-reinforced vessel can safely navigate in ice provided the concentration does not exceed how many tenths? #13 Which is NOT a potential hazard of approaching close to an iceberg? #14 When underway at a draft of 10.5 feet in a severe storm, the COASTAL DRILLER has a maximum allowed KG of __________. #15 What should NOT be used as an indicator that ice may be nearby? #16 Small floes of rough, hummocky sea ice capable of damaging a vessel __________. #17 What is NOT an indication that pack ice may be nearby? #18 During a period of "whiteout", you should expect which of the following? #19 In polar regions you should NOT expect to see __________. #20 A jack-up, while level in transit at 10 feet draft, experiences a wind gust which results in a port draft of 11 feet. What is the new starboard draft? #21 A jack-up, while level in transit at 10 feet draft, experiences a wind gust which results in a starboard draft of 11 feet 6 inches. What is the heel? #22 Multi-year ice is the hardest sea ice and should be avoided if possible. It is recognizable because of what tone to its surface color? #23 Which type of ice is a hazard to navigation? #24 An elevated jack-up weighs 14,000 kips. The drill floor, weighing 700 kips, is skidded 10.0 feet to starboard. The change in TCG is __________. #25 A jack-up, 180 feet in length, has the center of flotation at 110 feet aft of frame zero. The draft at the bow is 11.0 feet and the draft at the stern is 13.0 feet. What is the true mean draft? #26 A jack-up 180 feet in length with the LCF at 120 feet AF0 has a true mean draft (draft at LCF) of 10 feet. If the trim is 3 feet by the stern, what is the draft at the stern? #27 A jack-up 180 feet in length with the LCF at 120 feet AFO has a true mean draft (draft at LCF) of 10 feet. If the trim is 3 feet by the stern, what is the draft at the stern? #28 The draft at the forward draft mark of a jack-up is 11 feet 3 inches while the draft at the aft draft mark is 12 feet 9 inches. The value of trim is __________. #29 A jack-up has 8 inches of trim by the stern. Calculations show that the moment required to change trim one inch is 500 foot-kips. To level the unit, how far must a weight of 50 kips be transferred toward the bow? #30 A jack-up 180 feet in length with the LCF at 120 feet AFO has a draft of 8 feet at the bow and 11 feet at the stern. What is the trim by the stern?
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