Calculating armour values.

[RecruitMonty]

420mm Effective Hull Front
150mm Effective Hull Sides
150mm Effective Hull Rear
300mm Effective Turret Front
200mm Effective Turret Sides
200mm Effective Turret Rear
-----------------------------
HULL
Front: 210mm @ 60
Side: 100 to 150mm @ 0
Rear: 60 to 100mm @ 55
Floor: 20mm
Top: 30mm?

TURRET
Front: 210mm @ 45
Side: ~150mm @ 40
Rear: ~100mm @ 15 to 65
Top: 30mm?
-----------------------
Hull:
Front 38cm KE/42cm CE
Side 11/13, rear 13/14
Turret:
Front 27/30
Side 18/20, rear 12/13

Great, now I have three sets of values to puzzle over. Oh well I suppose I could synthesise the lot and come up with a mean average.

Thanks for dispelling my fears regarding the equation.