Quote:
Originally Posted by BigWalleye
The ASDIC search beam frequency was well above human heaing range. The ping-ping-ping is a Hollywood thing, just as (apparently) is the single ping from the Echolot. So it's hardly a safe bet that the British DDs wouldn't be able to catch the Echolot xmission.
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Itīs easy physic: the echolot pings only directly down to the bottom and the beam is very small. So if a DD wishes to be able to listen to the echolot,
his sonar receiver has to be under the submarine - the best position for every DD
I learned that facts during my time in the german navy 2001 - 2009. We often used the echolot during exercises with anti-sub-fregattes near us - they didnīt find us.