I was playing that mod SellnSailGalleon and KS_Stormrider. I found a lot a stuff that needs to be fixed or better done with Morrowind Enhanced.

Turning speed is way to fast for the big ships.

Models overlapping other models.

cant go in the cabin when ship is moveing.

placeing items down on the ship wile its moveing they will hover like there are on someing and not stay on the ship.

Same with Compaions they hover off to if the ships moveing.

Try Ultimate Transport. It fixes a lot of those problems, but not the one about objects sliding off. That one might be fixable with MWE or MWSE- it would be quite a bit of work, though.

If I still have that MWE Dev Kit with Sine, Cosine, and Tangent, the code could be optimized to be 50% less laggy.