Question 4818Deck General70% to pass
A semisubmersible, while floating level, displaces 20,000 long tons. LCB is 3.0 feet forward of amidships. Bulk, weighing 300 long tons, is placed in P-tanks located 40 feet aft of amidships. What is the new LCG?
AI Explanation
The correct answer is C) 2.36 feet forward of amidships.
To calculate the new LCG (Longitudinal Center of Gravity), we need to use the formula: LCG = (LCB * Displacement - Bulk * Moment Arm) / (Displacement - Bulk)
Given:
- Displacement = 20,000 long tons
- LCB = 3.0 feet forward of amidships
- Bulk = 300 long tons
- Moment Arm = 40 feet aft of amidships
Plugging in the values, we get:
LCG = (3.0 * 20,000 - 300 * 40) / (20,000 - 300)
LCG = (60,000 - 12,000) / 19,700
LCG = 48,000 / 19,700
LCG = 2.36 feet forward of amidships
The other answer choices are incorrect because they do not correctly apply the formula or use the given information to calculate the new LCG.
Related Questions
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