The IX model has more torpedoes and range but being bigger it takes longer to dive which is very dangerous against enemy bombers in a time when they extend their range (1942 and 1943), the VII is more manoeuvrable and dive faster (the C model faster than the B model) but carry less torpedoes and less tubes (only 1 stern tube).
The XXI wont be avaliable till mid ´44 iirc.
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Silent Hunter III - GWX 2.1 - 16km Atmosphere - SH3 Commander - 62% Realism - DiD
Kaptlt. Reinhard Hessler - 7th Flotilla - U-255 (Type VIIC)
Oblt. z. S. Hayden von Beier - R.I.P
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