Sonar and radar usage

Thanks for the reply Contact....continuing in the same vein, how many times would they have submerged to perform a Hydrophone sweep of the area during the day ?

I imagine they only dived once a day (the trim dive) and then only when it was necessary, i.e. forced to by plane or very bad weather.

I imagine they only used Hydrosweeps when they were in the vicinity of a possible contact, e.g. another u-boat beacon or radio report of possible contact in area such and such.

But then again, I could simpy be imagining things.

Cheers....

Originally Posted by Uber Gruber

Thanks for the reply Contact....continuing in the same vein, how many times would they have submerged to perform a Hydrophone sweep of the area during the day ?

I imagine they only dived once a day (the trim dive) and then only when it was necessary, i.e. forced to by plane or very bad weather.

I imagine they only used Hydrosweeps when they were in the vicinity of a possible contact, e.g. another u-boat beacon or radio report of possible contact in area such and such.

But then again, I could simpy be imagining things.

Cheers....

I think it also was due to where the u-boat was patroling. If it was the heavy naval traffic area divings were more often to search for potencial targets. However I'm not sure was it as a rule on how often dive procedures had to be made.

More chances to spot a target was submerged since as you know hydrophones could pick up screw noises from much greater distance then eyes of watch crew did.