Deck General · Centers (G, B, M, K)
When a vessel heels to starboard, the center of buoyancy (B) moves:
- AVertically upward along the vessel's centerline
- BTo starboard, toward the increased submerged volume✓ Correct
- CTo port, away from the heel
- DB does not move; only G and M shift with heel
Explanation
As the vessel heels, the shape of the submerged volume changes. More volume is submerged on the low (starboard) side. The centroid of this new submerged shape — B — moves to starboard. The vertical through this new B' intersects the centerline at M.
Authority: Stability & Trim (USCG deck topic)
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