enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Human-powered watercraft - Wikipedia

   en.wikipedia.org/wiki/Human-powered_watercraft

   Human-powered watercraft are watercraft propelled only by human power, instead of being propelled by wind power (via one or more sails) or an engine . The three main methods of exerting human power are: directly from the hands or feet, sometimes aided by swimfins; through hand-operated oars, paddles, or poles, or; through the feet with pedals ...

3. Rim-driven thruster - Wikipedia

   en.wikipedia.org/wiki/Rim-driven_thruster

   Rim–driven thruster, presented at SMM 2010. Th e rim-driven thruster, also known as rim-driven propulsor/propeller (or RDP) is a novel type of electric propulsion unit for ships. The concept was proposed by Kort around 1940, but only became commercially practical in the early 21st century due to advances in DC motor controller technology. [1]

4. Z-drive - Wikipedia

   en.wikipedia.org/wiki/Z-drive

   A Z-drive is a type of marine propulsion unit. Specifically, it is an azimuth thruster. The pod can rotate 360 degrees allowing for rapid changes in thrust direction and thus vessel direction. This eliminates the need for a conventional rudder. The Z-drive is so named because of the appearance (in cross section) of the mechanical driveshaft or ...

5. Underwater thruster - Wikipedia

   en.wikipedia.org/wiki/Underwater_thruster

   An underwater thruster is a configuration of marine propellers and hydraulic or electric motor built into or mounted to an underwater robot as a propulsion device. These give the robot movement and maneuverability against sea water resistance. The main difference between underwater thrusters and marine thrusters is the ability to work under ...

6. Marine propulsion - Wikipedia

   en.wikipedia.org/wiki/Marine_propulsion

   Marine propulsion. Rolls-Royce Marine Spey, a gas turbine developed by Rolls-Royce Holdings in the 1960s for marine propulsion. Marine propulsion is the mechanism or system used to generate thrust to move a watercraft through water. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical ...

7. Kayak - Wikipedia

   en.wikipedia.org/wiki/Kayak

   Typically, kayak design is largely a matter of trade-offs: directional stability ("tracking") vs maneuverability; stability vs speed; and primary vs secondary stability. Multihull kayaks face a different set of trade-offs. The paddler's body shape and size is an integral part of the structure, and will also affect the trade-offs made.