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Fort Denison is a former penal site and defensive facility occupying a small island located north-east of the Royal Botanic Gardens and about one kilometre east of the Opera House in Sydney Harbour, New South Wales, Australia. The island is also known as Pinchgut Island. ==History== Prior to European settlement, the island had the Eora name ''Mat-te-wan-ye'' (sometimes ''Mallee’wonya''). After the First Fleet arrived in 1788, Governor Phillip and his advocate-general used the name ''Rock Island''. Once a 15-metre(49 ft)-high sandstone rock, the island was levelled by convicts under the command of Captain George Barney, the civil engineer for the colony, who quarried it for sandstone to construct nearby Circular Quay. By 1796 the government had installed a gibbet on Pinchgut. The first convict to be hanged from the gibbet may have been Francis Morgan. In 1793, the British transported him to New South Wales for life as punishment for a murder. The authorities in NSW executed Morgan for bashing a man to death in Sydney on 18 October 1796.〔(Australia Today—Fort Denison (Pinchgut): A Relic of Early Sydney ) at (Education Notes) Australian Screen website. Accessed 27 March 2013.〕 In 1839, two American warships entered the harbour at night and circled Pinchgut Island. Concern with the threat of foreign attack caused the government to review the harbour's inner defences. Barney, who had earlier reported that Sydney’s defences were inadequate, recommended that the government establish a fort on Pinchgut Island to help protect Sydney Harbour from attack by foreign vessels. Fortification of the island began in 1841 but was not completed. Construction resumed in 1855 because of fear of a Russian naval attack during the Crimean War, and was completed on 14 November 1857. The newly built fort then took its current name from Sir William Thomas Denison, the Governor of New South Wales from 1855 to 1861. The fortress features a distinctive Martello tower, the only one ever built in Australia and the last one ever constructed in the British Empire. It was constructed using 8,000 tonnes of sandstone from nearby Kurraba Point, Neutral Bay. The tower's walls are between 3.3 metres and 6.7 metres thick at the base and 2.7 metres thick at the top. However, developments in artillery rendered the fort largely obsolete by the time it was completed. The tower itself had quarters for a garrison of 24 soldiers and one officer. Fort Denison's armament included three muzzle loaders in the tower, two 10-inch (254 mm) guns, one on a 360-degree traverse on the top of the tower and one in a bastion at the other end of the island, and twelve 32-pounder (15 kg) cannons in a battery between the base of the tower and the flanking bastion. Eventually all the guns were removed, except for the three muzzle-loading cannons in the gun room in the tower, which were installed before construction was complete. The width of passages within the tower are too narrow to permit these to be removed. However, from the beginning the three cannons were of limited utility, for two reasons: :: * The embrasures for the cannons were too small to use the guns effectively. By the time the cannon was loaded the ship would have sailed past. :: * The recoil was too powerful for the small room. In 1906, a saluting gun was transferred from Dawes Point to Fort Denison (see below). In 1913 a lighthouse beacon built in Birmingham, England, and shipped to Sydney, replaced the 10-inch (254 mm) gun on the roof of the tower. The light is called Fort Denison Light. In 2004 the NSW National Parks and Wildlife Service, which manages the site, restored the lighthouse beacon, which is still in use. The fort also has a functioning foghorn and a tide gauge, which was established in the mid-19th century. In May 1942, three Japanese two-man midget-submarines attacked Sydney Harbour. When the US Navy cruiser fired on the Japanese, some of its shells hit Fort Denison, causing the tower minor damage which remains visible. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Fort Denison」の詳細全文を読む スポンサード リンク
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