Question 4477 Deck General

70% to pass

For the DEEP DRILLER, in deballasting to survival draft when threatened with heavy weather from 100 knot winds, a load form should be calculated to determine that _______________.

A GM remains the same
B the maximum allowable KG is exceeded
C KG corrected for free surface effects does not exceed 62.24 feet
D KG corrected for free surface effects does not exceed 62.09 feet
AI Explanation

The correct answer is D) KG corrected for free surface effects does not exceed 62.09 feet. For a deep driller vessel threatened by heavy weather with 100-knot winds, a load form should be calculated to ensure that the KG (vertical center of gravity) corrected for free surface effects does not exceed 62.09 feet. This is a regulatory requirement to maintain the vessel's stability and prevent capsizing in severe weather conditions. The other options are incorrect because: A) maintaining the same GM (metacentric height) does not necessarily ensure the vessel's stability at the survival draft; B) exceeding the maximum allowable KG would compromise stability; and C) 62.24 feet is not the correct regulatory limit for a deep driller vessel.

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