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Type-23 frigate propeller
|Gallery location||Neptune Court (Floor plans)|
|Description||Screw propeller from type-23 frigate, on display in Neptune Court. Made of nikalium alloy (nickel, copper, aluminium and manganese), this was manufactured by Stone-Vickers Ltd and is in the Museum partly because it was rejected for service as not exactly meeting the technical design specification: according to former employees at the firm the blade edges had been ground a little too thin. Josiah Stone established a foundry in Deptford in 1831, of which the non-ferrous works subsequently moved to Charlton in 1917 and became J. Stone and Co (Charlton) Ltd in 1951. Its Marine Department produced the propellers for the 'Queen Mary' , Queen Elizabeth' and RY 'Britannia' among others, and 22,000 propellers for the Navy during WWII. It also made variable pitch propellers and water-tight doors (inc. for the 'QE' and RY 'Britannia'). The General Foundries produced specialized alloy castings for industry and aircraft propellers and other parts including for the ' Viscount' and 'Comet'. Stone foundries still operates at Charlton but mainly for the aircraft industry. As Stone Vickers the firm was incorporated as part of Rolls-Royce Plc. [PvdM]|
|Credit||National Maritime Museum, Greenwich, London. Presented by the Friends of the National Maritime Museum.|
|Materials||Nikalium - nickel, copper, aluminium, manganese, iron|
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