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See also:SIR See also:ROBERT See also:SEPPINGS (1767-1840) , See also:English See also:naval architect, was See also:born at Fakenham, See also:Norfolk, in 1767, and in 1782 was apprenticed in See also:Plymouth dockyard . In 1800, when he had risen to be See also:master shipwright assistant in the yard, he invented a See also:device which, as compared with the laborious See also:process of lifting then in See also:vogue, greatly reduced the See also:time required for effecting See also:repairs to the See also:lower portions of See also:ships in dry See also:dock . His See also:plan was to make the See also:keel of the See also:ship See also:rest upon a See also:series of supports placed on the See also:floor of the dock and each consisting of three parts—two being wedges arranged one on each See also:side of the keel at right angles to it, with their thin ends together, while the third was a See also:vertical See also:wedge fitting in and supported by the lower pair . The result was that it became possible in a comparatively See also:short time to remove these supporting structures by knocking out the side wedges, when the workmen gained See also:free See also:access to the whole of the keel, the See also:vessel remaining suspended by the shores . For this invention See also:Seppings received £IOoo from the See also:Admiralty, and in 1804 was promoted to be a master shipwright at See also:Chatham . There, in spite of the repugnance to innovation displayed by the naval authorities of that See also:period, he was able to introduce important improvements in the methods of ship-construction . In particular he increased the See also:longitudinal strength of the vessels by a See also:system of See also:diagonal bracing, and modified the See also:design of the bows and stern, so that they became stronger, not only offering better See also:protection than the old forms to the crews against the enemy's See also:fire, but also permitting a powerful armament to be fitted . Seppings, who received a See also:knighthood in 1819, was appointed surveyor of the See also:navy in 1813, and held that See also:office till his retirement in 1832 . He died at See also:Taunton on the 25th of See also:September 1840 . |
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