[Jaeger]

That is correct for the firing triangle, however not for the other triangle. Look at this:





There are TWO triangles here.

Triangle 1 (U-Boot to target triangle):

Angle #1: UBoot bearing to target (Seitenwinkel oder Zielpeilung)
Angle #2: Target bearing to UBoot (Kurswinkel)
Angle #3: Intersect of both U-Boat and Target courses

Triangle 2 (Torpedo-target triangle or firing triangle):

Angle #1: Torpedo lead angle i.e. how much forward of the target must the torpedo aim for a hit (Vorhaltewinkel)
Angle #2: Target bearing to Torpedo (Lagenwinkel)
Angle #3: Intersect of both Torpedo and Target courses (Schneidungswinkel)

Finally, Angle #4 (A subdivision of the Vorhalwinkel): Torpedo turn from its initial position in the tube to achieve the calculated Vorhalt (Gyro Angle or GA winkel)

thanks for this explanation. but i still have a question: i cant understand the difference between the Kurswinkel and the Lagenwinkel. Both words determine the same angle, but the Kurswinkel describes it in a navigational context, the other one in an attack context, right? you wrote as explanation for Kurswinkel "Angle #2: Target bearing to UBoot (Kurswinkel)". understood! and for Lagenwinkel, which should be the same one, you wrote: "Angle #2: Target bearing to Torpedo (Lagenwinkel)" why do you wrote to TORPEDO? I think it must be the same one, like Kurswinkel, means target bearing to uboot.

Jaeger