一、研制背景MK46鱼雷是美国继 MK43和 MK44鱼雷之后的第三代小型反潜鱼雷。1950年开始研制的MK43鱼雷,于1951年服役,它是美国第一代小型反潜鱼雷,也是鱼雷史上第一型最小的鱼雷,为小型鱼雷的发展奠定了基础。但因技术性能较低,如航速15节,与常规潜艇速度相当,难以打击潜艇。为此,1952年美国开 First, the development background MK46 torpedo is the United States following the MK43 and MK44 torpedo after the third generation of small anti-submarine torpedoes. Developed in 1950 MK43 torpedo, served in 1951, it is the first generation of small anti-submarine torpedoes in the United States, but also the torpedo in the history of the first type of torpedo, laid the foundation for the development of small torpedoes. However, because of its low technical performance, such as speed of 15 knots, the speed of conventional submarines is quite hard to combat submarines. For this reason, the United States opened in 1952