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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. Transom (nautical) - Wikipedia

   en.wikipedia.org/wiki/Transom_(nautical)

   Vertical transom and stern of a modern cargo ship. In some boats and ships, a transom is the aft transverse surface of the hull that forms the stern of a vessel. Historically, they are a development from the canoe stern (or "double-ender") wherein which both bow and stern are pointed. Transoms add both strength and width to the stern.

4. Jack (device) - Wikipedia

   en.wikipedia.org/wiki/Jack_(device)

   A jack which can lift a mobile home. A jack is a mechanical lifting device used to apply great forces or lift heavy loads. A mechanical jack employs a screw thread for lifting heavy equipment. A hydraulic jack uses hydraulic power. [1] The most common form is a car jack, floor jack or garage jack, which lifts vehicles so that maintenance can be ...

5. Sterndrive - Wikipedia

   en.wikipedia.org/wiki/Sterndrive

   The outdrive resembles the bottom half of an outboard motor and is composed of two sub-units: an upper containing a driveshaft connected through the transom to an engine which transmits power to a 90-degree-angle gearbox; and the lower containing a vertical driveshaft receiving power from the upper unit gearbox, transmitted through another 90 ...

6. Hydraulic transmission - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_transmission

   Hydraulic transmission may refer to various transmission methods for transferring engine power to drive wheels, using hydraulic fluid: Diesel-hydraulic transmission , used in railway locomotives Hydrostatic transmission , using hydraulic motors to convert the fluid energy into rotary propulsion

7. Dory (boat) - Wikipedia

   en.wikipedia.org/wiki/Dory_(boat)

   (with some exceptions) a fairly narrow transom often referred to as the "tombstone" due to its unique shape. [2] The hull's bottom is transversely flat and usually bowed fore-and-aft. (This curvature is known as "rocker".) The stern is frequently a raked narrow transom that tapers sharply toward the bottom forming a nearly double-ended boat ...

8. Jackscrew - Wikipedia

   en.wikipedia.org/wiki/Jackscrew

   The maximum mechanical advantage possible for a hydraulic jack is not limited by the limitations on screw jacks and can be far greater. After World War II, improvements to the grinding of hydraulic rams and the use of O ring seals reduced the price of low-cost hydraulic jacks and they became widespread for use with domestic cars. Screw jacks ...

9. Jackshaft - Wikipedia

   en.wikipedia.org/wiki/Jackshaft

   A PTO shaft or jackshaft with a protective shield to prevent entanglement. The term countershaft is somewhat older. In 1828, the term was used to refer to an intermediate horizontal shaft in a gristmill driven through gearing by the waterwheel and driving the millstones through bevel gears. [10]