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The P 4 class torpedo boat (TB) were aluminum-hulled torpedo boats of the People's Republic of China's People's Liberation Army Navy. Based on the Soviet K-123 hydroplane design, they were armed with twin machine guns, and two torpedoes. This class is currently considered obsolete, but was not completely retired from active service, being placed in reserve until the mid-1990s. The P 4 torpedo boats consisted of two primary types; the K-123 type with radar, and B-123 type without. The Chinese-built units made the radar standard for all boats, and replaced the original heavy machine guns onboard those former Soviet boats delivered to China with heavy machine guns. The PLAN transferred this class to the naval militia for training purposes, and because these boats are kept and maintained on land due to their small size, they are normally in better condition than larger units that are kept in the reserve and mothballed fleets. In addition to naval militia training duties, some of the surviving units have been converted into target drones, and have thus been returned to active service, functioning as minor support auxiliaries. As with the , the drone is controlled by larger converted gunboats such as the , , and classes. When in operation as drones, the boats are unmanned. ==P 6-class torpedo boat== P 6-class torpedo boat ("Project 183 Bolshevik") is a development of P 4-class TB originally intended to be a successor of P 4, but instead, it complemented P 4 when both types served together along with each other. As with P 4 class, P 6-class also comes in two version, one with radar and the other without, 183T and 183 respectively. P 6 class TB is larger than P 4-class TB, with sized increased by 3 times and is more heavily armed, with two 21-in torpedoes replaced the 18-in torpedoes of P 4-class, and twin 25 mm gun mounts replaced 14.5 mm gun mounts of P 4-class.〔(P 6-class torpedo boat )〕 *Length: *Width: *Draft: *Displacement: full *Max speed: max *Endurance:]] at , at *Propulsion: four diesel engines at each *Armaments: * *Two torpedoes * *Four guns (II x 2), with 1000 rounds of ammo * * 8 depth charges *Units built: 560 total (for former-USSR) 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「P 4-class torpedo boat」の詳細全文を読む スポンサード リンク
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