here is some numbers on V2 AX/BX models
https://www.schempp-hirth.com/filead...ntus-2axbx.pdf
C version should be same or bigger then B

A/B models are primary 15m ships, C model is primary 18m, there is brochure for V2C but unfortunately without cockpit dimensions
https://www.schempp-hirth.com/filead...Ventus-2cx.pdf