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RNLB J C Madge (ON 536)
RNLB ''J C Madge'' (ON 536) was a , non-self righting lifeboat〔Sheringham Lifeboats: By Leach, Nicholas and Russell, Paul :Published by landmark Pub Ltd, 2009: ISBN 978-1-84306-473-2〕〔The Sheringham Lifeboats, 1838-200: By Bensley, Mick: Published :Bengunn 2003:ISBN 0-9533998-1-8〕 stationed at Sheringham in the English county of Norfolk〔''OS Explorer Map 252 - Norfolk Coast East''. ISBN 978-0-319-23815-8.〕 from December 1904 until June 1936 during which time she was launched on service 34 times and saved 58 lives. ''J C Madge'' was replaced by .
==Design and construction==
''J C Madge'' was built at the Thames Ironworks and Shipbuilding Company in Blackwall in 1903 at the cost of £1,436 16s 6d.〔 She was paid for from a legacy of £2,000 left to the RNLI by a Mr James C Madge, a chemist, of Southampton.〔 The design was a Liverpool class, non-self righting, pulling and sailing lifeboat. ''J C Madge'' was in length, making her the largest〔 and the only one built of the Liverpool type lifeboat built. The boat was built using the Clinker method of constructing hulls.
The boat was fitted with two sliding or drop-keels and two water-ballast tanks. The lifeboat had two masts of which the fore-mast carried a dipping lug sail and the mizzen mast a standing lug sail.〔 The boat had two drop keels and was fitted out with water ballast tanks. She pulled 16 oars which were double banked for heavy weather. Her Launching carriage was built by the Bristol Wagon & Carriage Works Company, which was delivered separately by rail to Sheringham. This carriage was constructed with larger front wheels installed with a series of flat metal plates around circumference of each wheel. Their purpose was to help prevent the boat sinking into areas of soft sand.
Heavy ropes were attached to the carriage, and a team of 30 or more men would haul her into the waves at launch times. She was then rowed out through the surf, but if this was not possible then the lifeboat was pulled out to sea using a haul-off warp〔 (a windlass), by use of a thick rope anchored some 200 metres off shore and fixed at the beach end to a post by the lifeboat house. There was a large manually operated winch situated at the back of the boathouse to assist in recovering the boat after launch.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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