A semisubmersible which will not remain upright and will assume a list either to port or starboard is likely to have __________.

Correct Answer: Option B — a negative GM

Negative initial transverse metacentric height (GM) means the center of gravity (G) lies above the transverse metacenter (M), creating a righting couple that is non-positive or capsizing when inclined. The unit naturally assumes a loll angle to port or starboard.