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''PT 617'', also known as Torpedo Boat ''PT-617'', ''Big Red Cock'' and ''Dragon Lady'', "is the sole surviving 80' Elco type PT boat and represents the USA's most heavily used, highly favored, and combat-tested PT boat type in World War II."〔 She is a museum ship at the PT Boat Museum in Fall River, Massachusetts. The Elco type boat was the predominant type and is the same type as the famous commanded by John F. Kennedy; the "Higgins" boat is the other type. ''PT-617'' was declared a National Historic Landmark in 1989.〔〔 and 〕 ==Design== ''PT-617'' is a ''PT-103''-class ELCO motor torpedo boat. The hull was constructed of two layers of mahogany planking laid diagonally over laminated spruce, white oak, and mahogany frames, reinforced with longitudinal battens, secondary transverse frames, and clamps. A layer of fabric, impregnated with marine glue, was laid between the two layers of planking.〔 The boat had a displacement of (fully loaded) and was in length, with a beam of , and a draft of . Her three liquid-cooled, supercharged, 12-cylinder Packard 4M-2500 engines each drove a single shaft, giving the boat a top speed of . With a full load of 3,000 gallons (9 tons) of high octane aviation fuel she had a maximum cruising radius of .〔 ''PT-617'' was very heavily armed for her size with four Mark 13 torpedoes, a and two guns in the bows, a Bofors 40 mm gun at the stern, and two twin .50 caliber M2 Browning machine guns in mounts each side of the cockpit. There were also two depth charges mounted on racks on the stern, along with a smoke generator. Two Mark 50 rocket launchers and a mortar were also installed. In addition the crew were issued with small arms, each man carrying a M1911.45 caliber pistol, and the boat carried a .30 caliber Browning Automatic Rifle, M1903 Springfield .30-06 bolt-action rifles, .45 caliber Thompson submachine guns, 3-inch rockets, and Mk 2 grenades.〔 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「Motor Torpedo Boat PT 617」の詳細全文を読む スポンサード リンク
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