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2. Outboard motor - Wikipedia

   en.wikipedia.org/wiki/Outboard_motor

   Basic parts of an outboard motor. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method of propelling small watercraft.

3. Ducted propeller - Wikipedia

   en.wikipedia.org/wiki/Ducted_propeller

   A ducted propeller, also known as a Kort nozzle, is a marine propeller fitted with a non-rotating nozzle. It is used to improve the efficiency of the propeller and is especially used on heavily loaded propellers or propellers with limited diameter. It was developed first by Luigi Stipa (1931) and later by Ludwig Kort (1934). The Kort nozzle is ...

4. Impeller - Wikipedia

   en.wikipedia.org/wiki/Impeller

   Several different types of pump impellers Flexible impeller of cooling system pump of an outboard engine (1 euro cent coin for comparison, diameter 16.25 mm). An impeller is a rotating component of a centrifugal pump that accelerates fluid outward from the center of rotation, thus transferring energy from the motor that drives the pump to the fluid being pumped.

5. Marine thruster - Wikipedia

   en.wikipedia.org/wiki/Marine_thruster

   A marine thruster is a device for producing directed hydrodynamic thrust mounted on a marine vehicle, primarily for maneuvering or propulsion. [1] There are a variety of different types of marine thrusters and each of them plays a role in the maritime industry.

6. Azimuth thruster - Wikipedia

   en.wikipedia.org/wiki/Azimuth_thruster

   English inventor Francis Ronalds described what he called a propelling rudder in 1859 that combined the propulsion and steering mechanisms of a boat in a single apparatus. . The propeller was placed in a frame having an outer profile similar to a rudder and attached to a vertical shaft that allowed the device to rotate in plane while spin was transmitted to the propell

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   AOL latest headlines, entertainment, sports, articles for business, health and world news.

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   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

9. Toroidal propeller - Wikipedia

   en.wikipedia.org/wiki/Toroidal_propeller

   The marine propeller was patented again in the late 1960s by Australian engineer David B. Sugden affiliated with Robbins Company of Seattle. [6] Overall, the relevant Cooperative Patent Classification category, B63H1/265 Blades each blade being constituted by a surface enclosing an empty space, e.g. forming a closed loop , features over 160 ...