Question 4392Deck General70% to pass
The 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?
AI Explanation
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.
Related Questions
#4390 The DEEP DRILLER as currently configured is limited to a maximum water depth of _______________.#4391 The longitudinal location of the center of flotation for the COASTAL DRILLER has a value of _______________.#4393 Subtracting the height of the center of gravity corrected for longitudinal free surface effects from the height of the longitudinal metacenter of a MODU yields _______________.#4394 Subtracting the height of the center of gravity corrected for transverse free surface effects from the height of the transverse metacenter of a MODU yields _______________.#4395 The DEEP DRILLER is loaded as shown in the Sample Load Form #1 (Transit). Additional deck load may be placed aboard. If the maximum permissible deck load were placed in the pipe racks at a VCG of 130 feet, the KG increases _______________.