Question 4469Deck General70% to pass
In storm conditions, with the wind and waves from the port bow of the DEEP DRILLER in 600 feet water depth, the tensions in mooring line 1 and 2 are 400 kips. Completely slacking the mooring lines 5 and 6 reduces the tension in mooring lines 1 and 2 to about _______________.
AI Explanation
The correct answer is B) 330 kips.
When the vessel is moored in storm conditions, the tensions in the mooring lines are affected by the wind and waves acting on the vessel. Slacking the mooring lines 5 and 6 reduces the tension in mooring lines 1 and 2, as this redistributes the forces acting on the vessel. The reduction in tension is typically around 17-20% of the initial tension, which in this case would result in a tension of approximately 330 kips in mooring lines 1 and 2.
The other options are incorrect because A) 375 kips is too high, C) 275 kips is too low, and D) 220 kips is also too low compared to the expected reduction in tension.
Related Questions
#4467 In storm conditions in 600 feet of water, completely slacking the leeward mooring line of the DEEP DRILLER reduces the tension in that line to about _______________.#4468 In storm conditions, with the wind and waves from the port bow of the DEEP DRILLER in 400 feet water depth, the tensions in mooring lines 1 and 2 are 400 kips. Completely slacking the mooring lines 5 and 6 reduces the tension in mooring lines 1 and 2 to about _______________. #4470 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 environmental force due to the wind would be _______________.#4471 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 beam, the total environmental force would be _______________.#4472 The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). If weather conditions make it necessary to ballast down to survival, how much ballast would be required?