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Closeup of one of USCGC Mackinaw's 3.3 MW Azipod units. Azipod is a trademarked azimuth thruster pod design, a marine propulsion unit consisting of a fixed pitch propeller mounted on a steerable gondola ("pod") containing the electric motor driving the propeller, allowing ships to be more maneuverable.
Quadruple propeller installation: Speed: 25 kn (46 km/h; 29 mph) ‐ 28 kn (52 km/h; 32 mph) design service speed: Capacity: 2,165 passengers total: 563 first class; 464 second class; 1,138 third class; Crew: 802: Armament: 12 × QF 6-inch naval guns (for but not with) Notes: Largest ship in the world from 1907–1910. Running mate to RMS ...
An advanced type of propeller used on the American Los Angeles-class submarine as well as the German Type 212 submarine is called a skewback propeller. As in the scimitar blades used on some aircraft, the blade tips of a skewback propeller are swept back against the direction of rotation. In addition, the blades are tilted rearward along the ...
An azimuth thruster is a configuration of marine propellers placed in pods that can be rotated to any horizontal angle , making a rudder redundant. These give ships better maneuverability than a fixed propeller and rudder system.
The ship has a beam of 108 ft 2 in (33 m) and a draft of 37 ft 9 in (11.5 m) at her full combat load of 57,540 long tons (58,460 t). [4] The Iowa-class ships are powered by four General Electric geared steam turbines, each driving one screw propeller using steam provided by eight oil-fired Babcock & Wilcox boilers.
The commended, highly commended, and winning photos in the wrecks category show sunken ships from World War I and World War II as well as submerged aircraft. Here are the top 10 photos of wrecks ...
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 ...
Keeper-class ships were the first Coast Guard cutters equipped with Z-drives, which markedly improved their maneuverability. [11] The Z-drives have four-bladed propellers which are 57.1 inches (145 cm) in diameter [21] and are equipped with Kort nozzles. They can be operated in "tiller mode" where the Z-drives turn in the same direction to ...