centreboard
Sailboat's drop fin
A centreboard is a retractable fin that projects through the bottom of a sailboat to prevent sideways drift.
Unlike a fixed keel, it pivots or slides into a housing within the hull, allowing the boat to navigate shallow waters: We raised the centreboard to beach the dinghy.
Also spelled centerboard in American English.
Retractable hull fin
- finAquatic propulsion appendage
- skegStabilizing hull projection
- rudderPivoting stern blade
- tillerBoat steering lever
trunk · slot · case · pivot · pennant · gasket · cap · handle
Able to draw inward
- pivotPoint of rotation
- swingSuspended recreational seat
- adjustableAble to be changed
- raiseLift or increase
Angled sailing maneuver
- jibingMatching in agreement
- windwardFacing the wind
- leewardSheltered from wind
- beatingRepeated striking or pulsing
reaching · running · capsize · heel · righting · recovery · trim · balance
Resistance to displacement
- balanceSteadiness or amount owed
- leewayPermissible margin of freedom
- driftGradual movement, no direction
- resistanceCapacity to withstand force
tracking · lift · hydrodynamic · lateral · windward · performance · pointing · upwind
daggerboard
Retractable hull fin
tiller · trunk · slot · case · pivot · pennant · gasket · cap · handle · lanyard
retractable
Able to draw inward
- pivotPoint of rotation
- swingSuspended recreational seat
- adjustableAble to be changed
raise · lower · drop · lift · winch · manual · line · rope · haul · control
tacking
Angled sailing maneuver
beating · reaching · running · capsize · heel · righting · recovery · trim · balance
stability
Resistance to displacement
- balanceSteadiness or amount owed
- leewayPermissible margin of freedom
- driftGradual movement, no direction
resistance · tracking · lift · hydrodynamic · lateral · windward · performance · pointing · upwind
dinghy
Small auxiliary watercraft
mirror · enterprise · wayfarer · fireball · catamaran · sailboat · dayboat · trainer