Amphibious drive system for a boat

Amphibious vehicle

Boat impeller wheel for minimizing the splashes therefrom

Built-up watercraft

Cycloidal propeller

Device for controlling a cycloid propeller for watercraft

Device, such as a propeller, for ships which is independent of t

Flexible paddle wheel structure

High-speed paddle wheel catamaran

Hydrofoil vessel

Marine radial surface drive

Outboard boat propulsion installation

Paddle wheel boat

Paddle wheel for a ship

Paddle wheel kit for pontoon boat

Paddle wheel propulsion device kit

Paddle wheel propulsion system and improved paddle used...

Paddlewheel vessel thruster

Propelling system suitable for use on watercraft

Propulsion apparatus for marine vessels