Quote:
Originally Posted by speed150mph
And Henrich
I didn't think that passive torpedoes worked off wake...
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Yes, that is how they work. Their sonar packages in torpedoes look for cavitation and disturbances caused by turning screws. For surface ships, cavitation is a given and is usually quite strong, hence why passive homers work for ASUW. However, they are not great for subs because of the anti-cavitation designs, speed discipline and other factors. We easily see this in both the narroband and broadband sonar displays and the challenges of positive classification because of the aforementioned factors. The only time a passive homer is good against a sub is as a nasty follow-up to an active torpedo. When a sub turns and burns away from an active torpedo, the sub is going fast enough and most likely is cavitating enough to give the passive torpedo a good enough signal to acquire. That is also why veteran skipper drop both an active and a passive decoy to avoid the possibility of a passive torpedo following the active one.