Deck General · Ship Construction — Bilge Keel
A bilge keel fitted along the turn of the bilge is intended to:
- AIncrease speed
- BHold the anchor
- CDamp rolling motion✓ Correct
- DSupport the rudder
Explanation
Bilge keels are long fins along the bilge that add resistance to rolling, reducing roll amplitude and improving comfort and cargo safety. They affect speed only slightly and are a simple, passive form of roll damping.
Authority: Naval architecture; ship construction
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