Nice u-boat site with photos and more!

[Dowly]

You get a good picture of what it was to be in U-boot just by reading the war diarys! Not much action, just submerging, surfacing, plot correction, submerging etc.

And you get a good picture of the accidents that happened! If I remember right, it was on U-505`s war diary. Diesel engine caught on fire, tube 2 wouldn`t close completely and so on.

Would be great to have random accidents happen in next SH. Then you could call a support ship/u-boat to come and give you spare parts and stuff.

ZSCHECH GO ON COASTAL CIRCUIT, POSKE ON IRELAND CIRCUIT, MUELLER ON AMERICA 1

Taken from here:
http://www.ibiblio.org/hyperwar/ETO/.../SRH025-8.html

3. U-Boat Circuits
Communications were carried out on a large number of frequencies which were divided into circuits and selected so as to be suitable for any sea area in which the U-boats were operating. Several of these circuits were known as "Convoy circuits," and were used by U-boats while making group attacks on convoys. The following is a list of the circuits used. It is to be noted that the name of the circuit in most cases indicates the general area in which the circuit was used.

Regular U-boat Circuits
Coastal
Ireland
America 1, A & B
America 2, C & D
America 3 E & F
Africa 1, A&B
Africa 2, C & D
Africa 3, E & F
Arctic
Mediterranean
Aegean
Penang

Convoy Circuits
Diana
Hubertus
Wotan

Other circuits used by U-boats
Bruno 3 (Norddeich)
Anton (Kootwijk

All of the circuits in list (a) were used at one time or another during the war. Certain circuits were dropped or put into effect depending upon the disposition of the U-boats at sea. The Coastal circuit was normally used by boats operation in the Channel and Biscay areas. Ireland was used for the eastern North Atlantic. The America and Africa circuits consisted of three separate circuits each in which two channels

Couldn`t find any map to see where those areas are, but you`ll get a rough idea about the areas.