Why is 8 tons wrong? And the CG doesn't list the draft at all - it doesn't
figure in.
Its possible your boat was hand measured, but I doubt it was the CG fault if
there was a
discrepancy.

LOA = 31.6 CG says 31.4 Wrong!
Draft = 5.8 CG says 5.0 Wrong!
Beam = Correct

RB