Narwhal, Argonaut, and Nautilus?
 

Greatly enjoy PA and the S-boat mod (although I personally prefer the earlier style tower on the S-boat). :D
Any plans for future mods? There was discussion in the past about adding the V-class boats (Narwhal, Argonaut, Nautilus, etc.)...

http://www.rddesigns.com/subs/v-boats.html

Yours, Mike

I got no plans for any new SHII subs. Sorry.

The Source Files for the S-Boat is on my site if anyone wishes to change the tower to the old style tower. Some changes to the AA guns will need to be done.