Quote:
Originally Posted by Navarre
As far as I know, there were no stadimeter on the German subs. The distance were simply estimated because it plays no role in the method the Germans used. They use for the solution, a collection of firing tables and these tables are based on the mathematical formulas of the Thales' theorem also called intercept theorem. No matter how far a target is away, if it is still within the range of a torpedo, the distance is not important. The correction angle is always the same no matter how far away the target is, if the speed and heading of the target don't change.
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The link
HERE seems to suggest this is correct. At least for other than early war boats. Apparently the early war boats had stadimeters in the attack scope, but the later binocular optics did not allow the installation of a stadimeter.
BTW, the full link is broken at the moment, which is why I linked to the "quick view".
JD