. . . . "yes"@en . . "Mark 22 torpedo"@en . "1944"^^ . "Gyroscope"@en . . . . "500"^^ . "The Mark 22 torpedo, was an active acoustic homing torpedo developed by Bell Telephone Laboratories and Westinghouse Electric 1944. Development of this torpedo was discontinued at the end of World War II."@en . . "yes"@en . "29"^^ . "Submarines"@en . . . "yes"@en . . "21"^^ . . . "The Mark 22 torpedo, was an active acoustic homing torpedo developed by Bell Telephone Laboratories and Westinghouse Electric 1944. Development of this torpedo was discontinued at the end of World War II."@en . "3060"^^ . "Mark 22 torpedo"@en . "2"^^ . "Electric"@en . "246"^^ . "4000"^^ . "never in service"@en . .