USCG Exam PracticeVessel stability — metacentric height, free surface
According to 46 CFR §28.510, 'downflooding' is defined as the entry of seawater through any opening into the hull or superstructure of an undamaged vessel due to which of the following?
- A. Collision damage or structural failure
- ✓ Heel, trim, or submergence of the vesselCorrect
- C. Wave action over the weather deck only
- D. Reduction in freeboard below the load line
Why B is correct
46 CFR §28.510 defines downflooding as the entry of seawater through any opening into the hull or superstructure of an undamaged vessel due to heel, trim, or submergence. The key qualifier is that the vessel is undamaged; structural failure or collision damage is not part of this definition.
Cited:46 CFR §28.510