Originally Posted by daiquiri
As by Remmlinger's reply.
Bear in mind, however, that neither Michlet nor Flotilla take into account any eventual hydrodynamic lift force or (especially) trimming moment generated by the hull.
I am saying this because if your hull is designed to generate any amount of hydrodynamic lift, it's effects will not be visible in the calculations' results. While hydrodynamic lift may not play a big role in terms of direct contribution to the sum of vertical forces acting on the hull, the associated trimming moment may be relevant for some hull shapes (likely not for yours, though) - and the trim does alter resistance results.
Flotilla calculates the trim and sinkage. It also calculates trimming moments and sinkage forces, but I'm not sure if I actually wrote those quantities to an output file. (Michlet definitely does NOT account for sinkage and trim.)
FIRM took into account squat in its calculations.
REMEMBER: Not only does the hull sink and trim, but so does the water around the hull.
Happy New Year, Slavi!