Question 2071 Deck Safety

70% to pass

Which statement about the free surface effect is TRUE?

A The free surface effect usually increases at angles of heel above 25°.
B The effect can be reduced by shifting weights vertically.
C It has the same affect on initial stability whether the tank is 75% full or 25% full.
D The effect increases if the tank is off the centerline.
AI Explanation

The correct answer is C) It has the same affect on initial stability whether the tank is 75% full or 25% full. The free surface effect refers to the reduction in a vessel's initial stability caused by the movement of liquid in partially filled tanks. This effect is independent of the tank's fill level, as long as the tank is not completely full or completely empty. Whether the tank is 75% or 25% full, the free surface effect will have the same impact on the vessel's initial stability. Options A, B, and D are incorrect because they describe other characteristics of the free surface effect, but do not accurately capture the fact that the effect is the same regardless of the tank's fill level.

Related Questions
Q@q.QuestionNumber:After pinching a victim's nostrils, how can a rescuer best provide an airtight s... Q@q.QuestionNumber:You have called another vessel by flashing light and he has answered your call p... Q@q.QuestionNumber:The maximum speed of lowering for a lifeboat on gravity davits is controlled by ... Q@q.QuestionNumber:Your vessel has been damaged and you must shore a bulkhead. You should cut the ... Q@q.QuestionNumber:The vapor pressure of a substance _______________.

Ready to test your knowledge?

Take a Deck Safety Practice Exam
Official Resources
46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
← Previous All Questions Next →

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience with progress tracking.

Get the App