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The Waterman outboard engine appears to be the first gasoline-powered outboard offered for sale in significant numbers. [11] It was developed from 1903 in Grosse Ile, Michigan, with a patent application filed in 1905 [ 12 ] Starting in 1906, [ 13 ] [ 14 ] the company went on to make thousands of his "Porto-Motor" [ 15 ] units, [ 16 ] claiming ...
A UFO 34 an example of a masthead-rigged yacht. A masthead rig on a sailing vessel consists of a forestay and backstay both attached at the top of the mast. [1]The Bermuda rig can be split into two groups: the masthead rig and the fractional rig.
In machine tools, a spindle is a rotating axis of the machine, which often has a shaft at its heart. The shaft itself is called a spindle, but also, in shop-floor practice, the word often is used metonymically to refer to the entire rotary unit, including not only the shaft itself, but its bearings and anything attached to it (chuck, etc.).
The first such ship to use the Voith Schneider propeller was the excursion boat Kempten. Two German 1935-type M class minesweepers M-1 and M-2 were fitted with VSPs. The first British ship to use Voith Schneider propellers was the double-ended Isle of Wight ferry MV Lymington , launched in 1938.
Typical trim tabs on aileron, rudder and elevator. Trim tabs are small surfaces connected to the trailing edge of a larger control surface on a boat or aircraft, used to control the trim of the controls, i.e. to counteract hydro- or aerodynamic forces and stabilise the boat or aircraft in a particular desired attitude without the need for the operator to constantly apply a control force.
Boat building is the design and construction of boats (instead of the larger ships) — and their on-board systems. This includes at minimum the construction of a hull , with any necessary propulsion, mechanical, navigation, safety and other service systems as the craft requires.
A multihull is a boat or ship with more than one hull, whereas a vessel with a single hull is a monohull. The most common multihulls are catamarans (with two hulls), and trimarans (with three hulls). There are other types, with four or more hulls, but such examples are very rare and tend to be specialised for particular functions. [1]
A CNC dividing head may be used in this manner on either manual or CNC machinery. Most CNC dividing heads are also able to function as a full CNC axis and may be wired into the control of a CNC machine. This enables the machine's main CNC controller to control the indexing head just like it would control the other axes of the machine.