Question 5004Deck General70% to pass
A jack-up is trimmed six inches by the bow. The moment required to change trim one inch is 1200 foot-kips. Transferring 200 kips of drill water from a tank with an LCG of 20 feet to a tank with an LCG of 140 feet results in a final trim of _______________.
AI Explanation
The correct answer is B) 1 foot 2 inches by the stern.
The explanation is as follows:
1. The jack-up is initially trimmed 6 inches by the bow. To change the trim by 1 inch, a moment of 1200 foot-kips is required. Transferring 200 kips of drill water from a tank with an LCG of 20 feet to a tank with an LCG of 140 feet results in a moment of 24,000 foot-kips (200 kips x 120 feet). This moment will change the trim by 20 inches, resulting in a final trim of 1 foot 2 inches by the stern.
2. This calculation is based on the principles of ship stability and trim, which are essential for ensuring the safe operation of vessels, including those operated by the US Coast Guard.
3. The other options are incorrect because they do not accurately reflect the final trim of the jack-up based on the given information.
Related Questions
#5002 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? #5003 What is the change in longitudinal moments for the Coastal Driller if 2.0 feet of drill water is transferred from a full drill water tank 23 to an empty drill water tank 6? #5005 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? #5006 A jack-up with a calculated moment to change list one inch (MCL1") of 1,350 foot- kips intends to transfer drill water from a tank with a TCG of 82 feet to a tank with a TCG of 18 feet. How much weight should be transferred to change the draft on the port side from 11.0 to 11.5 feet? #5007 A jack-up displacing 350,000 cubic feet while floating in sea water (64 pounds per cubic foot) weighs _______________.