Yes, you can. Export the nodes and reimport them back (use insert). Change the id's/parent id's so you have an exact copy (no clone function yet in S3D), but differently identified. You'll have to clone all related nodes too (in this case 4 total). Then, once you've got the copy, rename the label to AI_Visual_Naval. Then, edit the ships .sns file (with notepad) and modify the O01 node section.
Be advised, this is based on my insights, not on actual tests :P