Question 5087Deck General70% to pass
The DEEP DRILLER is loaded as shown in the Sample Load Form Number 5 (Survival) when an unexpected slowly increasing starboard list and bow down trim occurs. A leak in 1S is found. By deballasting from ballast tanks 2S and 3S, the inclination slowly decreases. The increase in the longitudinal free surface correction is _______________.
AI Explanation
The correct answer is C) 0.83 foot.
The increase in the longitudinal free surface correction is due to the change in the free surface effect as a result of deballasting from ballast tanks 2S and 3S. The free surface effect increases as the liquid level in the ballast tanks decreases, and this increase in the longitudinal free surface correction is calculated to be 0.83 foot.
The other options are incorrect because they do not accurately represent the change in the longitudinal free surface correction for the given scenario. The key is understanding how the free surface effect changes as the liquid levels in the ballast tanks are reduced.
Related Questions
#5085 After jacking down your liftboat you have an unexpected list. You find that the only cause of this list must be a flooded leg. To keep adequate stability you should _______________.#5086 If a MODU takes a sudden severe list or trim from an unknown cause, you should FIRST _______________.#5088 After jacking down your liftboat you have an unexpected list. You find that the only cause of this list must be a flooded leg. Raising the flooded leg further would adversely affect the boats stability by _______________.#5089 Among the possible causes of unexpected rapidly increasing inclination of the DEEP DRILLER while on location is _______________.#5090 While drilling loaded as shown in Sample Load Form Number 4 (Drilling), the DEEP DRILLER suffers an unexpected but slowly increasing starboard and forward inclination. The wind and waves are light. This inclination could have been caused by _______________.