Weren't these the three V-class boats? And didn't they all start out with the very simple, "fleet boat" sail, like Gato first had? Or are you talking about a later fit(s) from WWII?

If you put me on the right track, I might be able to help you dig up/figure out some reference pics, Bill!

Speaking of which, I did have plans to one day build a Nautilus from early WWII - and I'll copy that sail, too, if there's any interest out there.


Cheers,

-Matty