seakeeper vs tanktest

[Guest62110524]

Hello
we had model in seakeeper, beam sea moderate 1.8m sea, the boat displayed what to me seemed unatural roll, whippy, showing her screw at times
chine disp hull, 13.5 wl 3.8 wlbeam
I have never seen a model in seakeeper, but it seemed unatural, as though the wave patterns were really close, steep to
Any ideas
thanks

[formsys]

Appendix B of the Seakeeper user manual has a series of validations of Seakeeper motion calculations versus tank tests. Like all strip theory methods, there are some limitations on accuracy for purely beam seas.

[Ad Hoc]

"...I have never seen a model in seakeeper..."

Then compare it in another software program for verification.