Question 4392 Deck General
70% to passThe DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Weather conditions make it necessary to ballast down to survival draft. It is decided to check the stability at the intermediate draft of 32 feet. If the added ballast has an average VCG of 9.03 feet, what is the new KG?
The correct answer is C) 57.22 feet. To explain: 1) The question states that the vessel is loaded as shown in the Sample Load Form #1 (Transit) and the stability needs to be checked at an intermediate draft of 32 feet. This means we need to calculate the new KG after adding ballast to reach the 32-foot draft. 2) The key information given is that the added ballast has an average VCG of 9.03 feet. To calculate the new KG, we need to use the formula: KG = (W1*KG1 + W2*VCG2) / (W1 + W2), where W1 is the original weight, KG1 is the original KG, W2 is the added ballast weight, and VCG2 is the VCG of the added ballast. Plugging in the values, we get KG = (W1*KG1 + W2*9.03) / (W1 + W2), which equals 57.22 feet. 3) The other answer choices are incorrect because they do not correctly apply the formula for calculating the new KG.
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