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The main cranes are also equipped with a third (whip) hoist. The whip hoist is capable of lifting 200 t (220 short tons) at a radius between 37 and 153 m (121 and 502 ft) from 100 m (330 ft) below the waterline to 181 m (594 ft) above it at maximum draft. [7] Sleipnir is equipped with a third, auxiliary, crane at
In Norse mythology, Sleipnir / ˈ s l eɪ p n ɪər / (Old Norse: "slippy" [1] or "the slipper" [2]) is an eight-legged horse ridden by Odin. Sleipnir is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, and the Prose Edda, written in the 13th century by Snorri Sturluson.
The whip hook has a capacity of 120 tonnes at 150 m. The 2nd Auxiliary hook can be deployed to a water depth of 450 m. The two cranes are capable of a tandem lift of 14,000 tonnes. Each crane was fitted with 15,600 hp (11,630 kW) engines to power the boom and load hoists, 9 tugger lines and the crane slewing system.
Manual crane from the late 19th century used for unloading small loads from ships at the Port of Barcelona, Spain A crane is a machine used to move materials both vertically and horizontally, utilizing a system of a boom , hoist , wire ropes or chains , and sheaves for lifting and relocating heavy objects within the swing of its boom.
Star Fleet - Starship Recognition Manual - Ships of the Baton Rouge Era: Neale Davidson 2005 .pdf 36 8.5" x 11" Star Fleet - Starship Recognition Manual - Volume One - Ships of Support 2268: Neale Davidson 2005 .pdf 36 8.5" x 11" Star Fleet - Starship Recognition Manual - Volume One - Ships of the Line 2268: Neale Davidson 2005 .pdf 36 8.5" x 11"
Diagram 3 shows three rope parts supporting the load W, which means the tension in the rope is W/3. Thus, the mechanical advantage is three-to-one. By adding a pulley to the fixed block of a gun tackle the direction of the pulling force is reversed though the mechanical advantage remains the same, Diagram 3a. This is an example of the Luff tackle.
A drum hoist (steel wire rope visible) and motor. In underground mining a hoist or winder [1] is used to raise and lower conveyances within the mine shaft.Modern hoists are normally powered using electric motors, historically with direct current drives utilizing Ward Leonard control machines and later solid-state converters (), although modern large hoists use alternating current drives that ...
Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.