Originally Posted by
meleagertoo
Google (your friend) revealed this to be a Mk30, capable of all of 2500m range at a heady 12Kts.
fine against conventional subs at the time (1954) but not so good against an SSN I guess - but in the first Russian SSN's only started to come in about 1958/59 IIRC so still a useful weapon
Tho why we persisted with them to 1970 is another matter