Maciek
Yes, we had intensive exercises. After work up we started with daily training of the crew by dummyattack e.g. using the fruitmachine and the other equipment like ordinary attack, but did`t actually launch a torpedo, just air. Then continued the exercises by firing dummy (not live) torpedoes at a real target ship, setting the depth at safe level so a hit- torpedo passed well below the targetships keel. The dummytorpedo surfaced after a preset lengthrun and was catched by a special torpedofishingvessel.
I was not involved in the torpedopart so I don`t know to much on the subject, but we used ex german torpedoes, quite a stock was left behind by the germans. We mostly used the LUT torpedoes. I don`t think we modernized the firecontrol system nor the other electronic equipment. We didn`t even had a radar which worked. So in 1953-1956 we used mostly the original german equipment, but later I guess we did some alterations. As to the U-995 at Laboe they did some strange exchange of equipment,removing the original schnorchel, the original periscope and kept a few items intalled in Norway after my time.
Tore