Advantageous use of battery mass in electric watercraft

Air bearing pontoon system for shipping containers

Amphibious all-terrain tracklaying vehicle

Amphibious multihull boat

Amphibious vehicle

Apparatus for attaching a pontoon to a watercraft

Apparatus for controlling the buoyancy and draft of a vessel

Apparatus for reconfiguration of a variable-draft vessel

Aquatic recreation vehicle

Aquatic show boat

Aquatic vehicle

Arrangement for jointing two surfboards as a whole

Articulated multi-hull water craft

Asymmetric bridge

Asymmetric minimum resistance hull

Asymmetric pontoons for a water craft

Asymmetrical sailing catamaran keels

Barge

Barge dagger skegs

Barge dagger skegs