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A V-drive is a power transmission system for boats that consists (usually) of two gearboxes, two drive shafts, and a propeller.. Whereas the conventional arrangement sites the engine with its gearbox aft, driving the propeller shaft directly, in a "V-drive" layout, the engine is reversed, to have the gearbox in front.
Outboard motor shaft lengths are standardized to fit 15-, 20- and 25-inch (38-, 51- and 64-centimeter) transoms. If the shaft is too long it will extend farther into the water than necessary creating drag, which will impair performance and fuel economy. If the shaft is too short, the motor will be prone to ventilation.
Wakeboard boats have a certain type of hull to allow for bigger wakes. The bigger the wake the more the stern is sitting in the water. These boats are not good for shallow waters considering their draft is roughly over 3 feet. There is a rudder propeller and shaft drive along with three fins directly under the boat.
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 ...
The first Uniflite boat an all fiberglass 17' outboard. Uniflite soon added a 14', an 18' and a 20' outboard and inboard/outboard boats, followed by a 25' express cruiser followed by a 31' and a 34' boat. Uniflite was the only boat builder exclusively using fire-retardant resins in the production of pleasure boats. [citation needed]
Length overall (LOA, o/a, o.a. or oa) is the maximum length of a vessel's hull measured parallel to the waterline. This length is important while docking the ship. It is the most commonly used way of expressing the size of a ship, and is also used for calculating the cost of a marina berth [1] (for example, £2.50 per metre LOA).
A paddle steamer's engines drive a shaft that is positioned above the waterline, with the cylinders positioned below the shaft. SS Great Britain used chain drive to transmit power from a paddler's engine to the propeller shaft – the result of a late design change to propeller propulsion. Image of stern tube and propeller shaft in a lighthouse ...
The capsize screening formula (CSF) is a controversial method of establishing the ability of boats to resist capsizing. It is defined for sailboats as: Beam / ((Displacement/64.2) 1/3), with Displacement measured in pounds, and Beam in feet. A lower figure supposedly indicates greater stability, however the calculation does not consider factors ...