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2. Ship measurements - Wikipedia

   en.wikipedia.org/wiki/Ship_measurements

   Shaft Horsepower (SHP) – The amount of mechanical power delivered by the engine to a propeller shaft. One horsepower is equivalent to 746 watts. Tonnage – A number derived from any of several methods to calculate the volume or other number indicative of a ship's cargo carrying capacity.

3. Sun Odyssey 45.2 - Wikipedia

   en.wikipedia.org/wiki/Sun_Odyssey_45.2

   The Sun Odyssey 45.2 is a recreational keelboat, built predominantly of fiberglass, with wood trim.It has a masthead sloop rig, a raked stem plumb stem, a reverse transom with step and a swimming platform, an internally mounted spade-type rudder controlled by a wheel and a fixed fin keel with a weighted bulb, or an optional deep-draft keel.

4. Ducted propeller - Wikipedia

   en.wikipedia.org/wiki/Ducted_propeller

   A ducted propeller, also known as a Kort nozzle, is a marine propeller fitted with a non-rotating nozzle. It is used to improve the efficiency of the propeller and is especially used on heavily loaded propellers or propellers with limited diameter. It was developed first by Luigi Stipa (1931) and later by Ludwig Kort (1934). The Kort nozzle is ...

5. Length overall - Wikipedia

   en.wikipedia.org/wiki/Length_overall

   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). LOA is usually measured on the hull alone. [2] For sailing ships, this may exclude the bowsprit and other fittings added to the hull.

6. Azimuth thruster - Wikipedia

   en.wikipedia.org/wiki/Azimuth_thruster

   English inventor Francis Ronalds described what he called a propelling rudder in 1859 that combined the propulsion and steering mechanisms of a boat in a single apparatus. . The propeller was placed in a frame having an outer profile similar to a rudder and attached to a vertical shaft that allowed the device to rotate in plane while spin was transmitted to the propell

7. Advance ratio - Wikipedia

   en.wikipedia.org/wiki/Advance_ratio

   Diameter of the propeller. The propeller advance ratio or coefficient is a dimensionless number used in aeronautics and marine hydrodynamics to describe the relationship between the speed at which a vehicle (like an airplane or a boat) is moving forward and the speed at which its propeller is turning.