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Originally Posted by Kumando
That means a DD is pinging me and i can run on flank and he wont be able to listen to me?  |
No, what he means is that it
if it's pinging you it doesn't matter if you're going flank, as he's emmiting an active signal he can detect you no matter what speed you're doing, the asdic (active sonar) emmits a high frecuency sound that transmits through the water, when it reaches your sub it reflects in you hull and returns, the asdic operator is listening and measuring the time elapsed between the emited sound and the echo he can get a fix on the distance and bearing of your sub, the asdic is not affected as much as the hydrophone by the hunter speed, that's why they can make a run for you at high speed, while his companions keep a low speed listening to the hydrophones.
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