Torpedo wire control

[stork100]

A couple of passages from the manual I found:

Wire breakage while a torpedo is running can be minimised by;
- moving at slow speed
- keeping your submarine level
- keeping the weapon within a 60 degree arc of the bow of your submarine

Generally, the greater the shot angle, the more likely the wire is to break.

So I'm guessing it's more advisory rather than the absolute limit.