Floating and moving bodies

Hey guys

I know that for a fixed boundary only the density equation is solved in DualSPHysics v4.2 as shown in below pictures (from pdf from last meet up):

I wondered though how floating and moving bodies interact? I assume that for a moving body it is moved first and then the fluid particles around it will move accordingly, while for a floating body the momentum equation is solved for to make it move according to fluid forces?

Could someone clear my confusion?

Kind regards
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