Hi David
Blender import perfectly the hull as Wavefront .obj
with export as i.e.:
-Triangles only
-Angle 12
-Divide larger than 1 curved
-Avoid smaller than 1
-Aspect ratio limit 1
Considering the type of object (larger piece of a boat) only curves
you can have a count of vertices >8000
and a subsurf modifier 1 level give fine result.