Ad
related to: pivot point ship handling device
Search results
Results From The WOW.Com Content Network
Single pivot – One pivot point where the lifeboat is moved over the side of the craft. Multi-pivot – Common on promenade decks of cruise ships. Useful where space is limited. Free fall – Lifeboat slides right off vessel. Lifeboat must be an enclosed type. Main type of Davit on merchant ships now. This type does not use falls.
A whipstaff is a steering device that was used on European sailing ships from the 14th to the 18th century. Its development preceded the invention of the more complex ship's wheel and followed the simple use of a tiller to control the steering of a ship underway. [1] In a typical arrangement, an iron gooseneck was fitted at the fore end of the ...
Steelyard weighing device from the late nineteenth century. Minnesota Historical Society collections. Roman steelyard from Pompeii. The steelyard comprises a balance beam which is suspended from a lever/pivot or fulcrum which is very close to one end of the beam. The two parts of the beam which flank the pivot are the arms.
In addition to added lift during acceleration, better side-to-side stability, and reduced porpoising, they provide improved handling. "The outside edge provides grip in turns, allowing you to turn sharper and faster without fear of the back end sliding out. They can also provide a pivot point for the hull in turns."
In rowing the oar is connected to the vessel by means of a pivot point for the oar, either an oarlock, or a thole. The oar is placed in the pivot point with a short portion inside the vessel, and a much larger portion outside. The rower pulls on the short end of the oar, while the long end is in the water.
The pivot point is 36% of the length from the leading edge, both to promote efficiency and to lessen the turning effort. (Note the anti-cavitation plates above the propeller and atop the forepart of the rudder). The basic principle proportions of a typical Schilling rudder layout are as follows: Rounded leading edge
Pintle/gudgeon sets have many applications, for example in sailing, to hold the rudder onto the boat; in transportation, in which a pincer-type device clamps through a lunette ring on the tongue of a trailer; and in controllable solid rocket motors, in which a plug moves into and out of the motor throat to control thrust.
A long narrow centreboard produces less drag than a short, wide one for a given amount of lift, resulting in a faster boat that can point closer into the wind. A fore and aft, pivoting centreboard can also be used to move the centre of lateral resistance aft to match a change in sail plan, such as furling or dropping the jib.