Hi Trevally,
I see Orkney's shipyards are currently hard at work

I am sure that Privateer will be able to provide any detail on the process of importing 3d meshes onto dat files.
Nevertheless, you might want to have a look also at
this tutorial by skwasjer covering the same topic.
Take in mind that it was written assuming that the obj file we want to import was generatet using 3D studio. Using Wings 3D or Blender meshes might require different settings and/or some post-processing of the obj and mtl files to be imported.
Afaik, s3d provides an easy way to import animated meshes as well. I am sure I've read another tutorial on this feature, but I cannot find it anymore