Amphibian bicycle

Amphibious bicycle

Amphibious pedal powered sailboat

Aquatic recreational vehicles

Aquatic vehicle with articulated steering

Belt driven pedal boat

Bicycle-type marine vessel

Boat having a pedal drive

Boat having a pedal drive

Bow-mounted propeller driven boat

Canoe paddle assembly

Cerf cycle

Collapsible paddle boat

Collapsible pontoon pedal boat

Collapsible water bike

Device for converting a cycle into a treadle-operated water cycl

Drive mechanism assembly for aquatic vehicle

Electric motor assisted propulsion system for human-powered...

Exercising device for water use

Floating apparatus with manual driver