zzuf, Have got hold of a NATOPS manual for the aircraft, there is no chart for Vmc values, other than a statement that 138 knots is Vmc clean with windmilling prop. A further statement as follows,
V2 speed is the take off safety speed. V2 is the optimum single engine climb speed (gear up, take off flap setting, prop feathered) and is the greater of the following;
1. 1.2 times the zero thrust stalling speed with the wing flaps in the take off position
2. 1.1 times the air minimum control speed
the only minimum control speed chart is for on ground.
