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USCGC ''Mackinaw'' (WAGB-83) is a vessel specifically designed for ice breaking duties on the Great Lakes. LR number: 6119534 ''Mackinaw'' was homeported in Cheboygan, Michigan during active service. Due to ''Mackinaw''s age and expensive upkeep, the cutter was decommissioned and replaced with a smaller multipurpose cutter , which was commissioned in Cheboygan the same day. In 2002 the crew of this cutter painted and refurbished the Fourteen Foot Shoal Light. The old ''Mackinaw'' moved under its own power on 21 June 2006 from the port of its decommissioning to a permanent berth at the dock at the ship's namesake port, Mackinaw City, Michigan where she now serves as a museum ship known as Icebreaker Mackinaw Maritime Museum. ==Construction== ''Mackinaw''’s design was based on the of Coast Guard icebreakers, but the cutter was built wider and longer than the other Wind-class vessels so that her draft would be shallower. Because she was built specially for the Great Lakes (she was too wide to fit through the pre-1959 St Lawrence Seaway) her hull was built lighter than the Wind-class vessels, but shared many characteristics, such as a relatively short length in proportion to the great power developed, a cut away forefoot, rounded bottom, and fore, aft and side heeling tanks. Diesel electric machinery was chosen for its controlability and resistance to damage, and she also had a bow propeller. She was laid down on 20 March 1943 at American Ship Building & Drydock Company in Toledo, Ohio, launched (sideways) on 4 March 1944, and commissioned on 20 December 1944. 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「USCGC Mackinaw (WAGB-83)」の詳細全文を読む スポンサード リンク
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