sponson

Boat's side bulge

A sponson is a projection from the side of a vessel or vehicle, typically for stability or to mount equipment.

On ships, sponsons extend from the hull to support gun platforms or provide additional buoyancy.

On amphibious vehicles and seaplanes, they prevent capsizing.

Helicopters may have sponsons housing landing gear or fuel tanks.

watercraft

hull

Outer covering or frame

catamaran · trimaran · canoe · kayak · paddleboard · houseboat · barge · narrowboat · tugboat · ferry

projection

protrusion

Part extending outward

outgrowth · protuberance · extrusion · blister · fairing · housing · enclosure · cantilever · appendage

aircraft

pylon

Supporting structure for wires

ordnance · countermeasures · wingtip · floatplane · seaplane · amphibian · helicopter

Opposites
structural location

sponsonhull

Outer covering or frame

fuselage · keel · centerline

Phrases
Family

sponsor, sponsorship, sponsored, sponsoring, sponsorships, unsponsored, sponsorless

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