Keel

The keel is a fin-shaped underwater structure extending from a sailboat's hull, typically containing ballast for stability and providing lateral resistance to prevent sideways drift. Charter customers encounter keels when reviewing boat specifications or understanding how a vessel will handle different conditions. Different keel types—fin, wing, and lifting—affect performance, stability, and the shallow-water cruising grounds a boat can access. The choice of keel influences both safety and suitability for specific sailing conditions.