leeboard

Hull-mounted stabilizing plank

A leeboard is a wooden board or fin mounted on the side of a flat-bottomed boat, lowered into the water to prevent sideways drift when sailing.

Leeboards serve the same function as a centerboard or keel but attach externally to the hull rather than running through it: Dutch barges traditionally use leeboards rather than keels.

vessels

flat-bottomed

With horizontal base

sharpieCunning swindler or deceiver
dorySmall flat-bottomed fishing boat
puntKick before landing

Optimist · Sunfish · dinghy · keelless

sailing

tacking

Angled sailing maneuver

jibingMatching in agreement
close-hauledSailing near wind's eye
beatingRepeated striking or pulsing

reaching · heeling · pointing · upwind · downwind · lifting · lowering · trimming · balancing

alternatives

centerboard

Retractable sailboat fin

daggerboardRetractable hull fin
outriggerBoat-balancing lateral float
skegStabilizing hull projection

rudder · hydrofoil

function

centerboard

Retractable sailboat fin

daggerboardRetractable hull fin
keelHull's structural base
pivotingRotating around fixed point

retractable · deployable · hydrodynamic · anti-slip · pennant

construction

plywood

Engineered layered wood panels

fiberglassReinforced woven strand composite
woodenMade from timber
laminatedBonded between protective layers

blade · external · removable · shaped · thickness · chord · leading-edge · streamlined · weighted · buoyant

Opposites

lateral drift prevention device placement

leeboardcenterboard

Retractable sailboat fin

daggerboard · keel

Family

board, leeway, lee, boardwalk, overboard, leeward, starboard, windward

Familiarity: Top 1,000,000
Profile: Used worldwide · Timeless · Concrete · Rated G