Thanks guys for the quick replies, I checked plot via radar and yes sometimes there is deviation, but it is very linear; and for convoy speed they end always slower than computed by myself, but it is surely current and wind, I guess SH4 computes them since with the sub speed vary at a know rate speed eg Normal.
I shall give a check about MOBO plotting prog too.
Will check for rudder to end myself the mission and see what it does.
Graphics are ok again, I disabled "real sound" dunno what it is exactly, but it said disabled it would eat less ressources.
Found on the forum different subs specs.
