Puster Bill |
07-26-07 07:54 AM |
Quote:
Originally Posted by Heibges
I'm not buying the 25% effective either. If they were 10% effective I would be surprised.
Just like our "smart munitions" are 90% accurate.:lol:
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The sources are pretty much in agreement. Out of 204 FIDO's dropped on German and Japanese submarines, there were 37 sunk and 18 damaged.
37/204*100 = 18% of attacks were hard kills
18/204*100 = 9% of attacks resulted in damage
55/204*100 = 27% of attacks resulted in a kill or damage.
A damaged sub is often not able to continue it's mission, so that is a 'mission kill', and in many cases it leads to destruction of the submarine in subsequent attacks (due to lack of mobility, lack of ability to dive, etc.).
What is interesting is that the Germans *MUST* have known at least something about FIDO, as a significant number of boats had been attacked but not hit, or hit but damaged (and I have to assume at least one of those damaged made it back to base). I'm sure that the FIDO would have been distinctly audible using the GHG and the KDB, so they had to know there was some kind of guided, air-dropped torpedo. Since they themselves were fielding an acoustic torpedo, it wouldn't have taken a great leap to imagine the Allies had developed an air-droppable version specifically targeted at U-boats.
Given that knowledge, a counter-measure would have been simple: A small device that transmits the sound of a u-boat at flank speed that travels at a decent speed away from the U-boat. As soon as the sonar operator hears the splash and the screws of a FIDO, you launch it and go deep at silent speed (you are probably already crash-diving).
I haven't read anything in the literature suggesting that the Germans knew about FIDO, even though they *SHOULD* have known, or at least suspected.
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