Deck General · Angle of Loll
Angle of loll occurs when:
- AGM is positive and the vessel lists due to an off-center G
- BGM is zero or slightly negative, and the vessel finds a new equilibrium at an angle to one side✓ Correct
- CFree surface effect reduces GM to exactly 1 foot
- DThe vessel is overloaded beyond the Plimsoll line
Explanation
Loll occurs when KG exceeds KM (negative GM) at the upright position. The vessel is unstable upright but finds a stable equilibrium at an angle where the GZ curve crosses zero again due to the geometric effect of increased waterplane area as it heels. It can flop from side to side.
Authority: Stability & Trim (USCG deck topic)
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