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Originally Posted by CCIP
Sounds good Jungman. Can't wait for the results, please tell us the values so I can stick them into my file and run them by Beery before RUb 1.43 is out.
Can you confirm the sources on those receivers? Perhaps that's a theoretical range, and in practice it didn't work out to that much?
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Yeah that was me, the information I posted in the main forum was this:
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Metox: 8 km for ASV I and ASV II radar but not able to detect ASV III and above
Borkum: 20 km capable of detecting ASV III and above
Naxos: 40 km capable of detecting ASV III and above
Tunis: 60 km capable of detecting all ASV models
The above comes from "Type VII: Uboats" by Robert Stern and THE U-BOAT: The Evolution and Technical History of German Submarines
by Eberhard Rossler, so I think the above figures are pretty accurate. Judging by other literature, if the U Boat had the necessary equipment to detect the emissions then there was sufficient time to submerge. Which currently isn't working in the current model. I dont really know how to change these values, but concerning the snorkel problems being detected it seems to me that at the same time the RWR systems need to be changed also.
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The range for the Metox depended on the angle that the plane approched from and also the skill of the operator, remember too that it couldn't pick up ASV III at all.
The ranges are the ones given for practical purposes not theoretical. Provided the equipment was installed in the U Boat there was always sufficient time to dive to safety, the problem was that not all radar emissions mean't that you had been detected, so it was up to the operator to determine if the signal was becoming stronger, i.e the aircraft is making a vector towards you. Another issue of course was that RWR equipment in u boats was difficult to maintain and prone to fail, if it did then you were a sitting duck. But make no mistake having RWR was an absolute lifesaver in most situations for a u boat, BUT it did mean that the u boat was now in an entirely defensive frame of mind, i.e picking up signals and diving is fine (you can read many accounts from 1943 where a u boat would dive 20-30 times a night), but if there are so many aircraft patrolling as by 1944 then the uboat cannot spend any significant time on the surface.[/quote]