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Each submarine was armed with up to 16 UGM-27 Polaris A-3 nuclear missiles. The class comprised Resolution, Repulse, Renown and Revenge. They were built by Vickers Armstrong in Barrow-in-Furness and Cammell Laird in Birkenhead between 1964 and 1968. All four boats were based at HM Naval Base Clyde (HMS Neptune), 40 km (25 mi) west of Glasgow ...
Pelorus aboard HMS Belfast. In marine navigation, a pelorus is a reference tool for maintaining bearing of a vessel at sea. It is a "simplified compass" without a directive element, suitably mounted and provided with vanes to permit observation of relative bearings.
Polaris A1/A2 Polaris A3 Poseidon C3 Trident C4; Yes/No No. of boats Yes/No No. of boats Yes/No No. of boats Yes/No No. of boats George Washington: 5 5 0 1959–1985 5 5 0 0 Ethan Allen: 5 5 0 1961–1992 5 5 0 0 Lafayette: 9 9 1* 1963–1994 9 9 9 0 James Madison: 10 10 1* 1964–1995 0 10 10 6 Benjamin Franklin: 12 12 0 1965–2002 0 12 12 6
Sail components include the features that define a sail's shape and function, plus its constituent parts from which it is manufactured. A sail may be classified in a variety of ways, including by its orientation to the vessel (e.g. fore-and-aft) and its shape, (e.g. (a)symmetrical, triangular, quadrilateral, etc.).
A small boat stuffing box comprising an adjusting nut, a locking nut and a sleeve. On a boat having an inboard motor that turns a shaft attached to an external propeller, the shaft passes through a stuffing box, also called a "packing box" or "stern gland" in this application. The stuffing box prevents water from entering the boat's hull.
For submariners accustomed to diesel-powered boats, the Polaris boats were very pleasant indeed. There was no need to conserve water, as there was distilling capacity to spare, so the crew could have hot showers and laundry facilities. Nor was there any need to conserve battery power, as the reactor supplied enough power for a small town. [154]
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 ...
The anchor is shackled to the anchor cable (US anchor chain), the cable passes up through the hawsepipe, through the pawl, over the windlass gypsy (US wildcat) down through the "spurling pipe" to the chain/cable locker under the forecastle (or poop if at the stern (US fantail)) - the anchor bitts are on a bulkhead in the cable locker and the bitter end of the cable is connected to the bitts ...
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