I concurr - took a look on NavSource, and they have nine boats classified as (at one time or another, anyway), the "V-boats":

Barracuda Class
SS-163 Barracuda ex V-1
SS-164 Bass ex V-2
SS-165 Bonita ex V-3

Argonaut Class
SS-166 Argonaut ex SM-1 & APS-1 & ex V-4

Narwhal Class
SS-167 Narwhal ex V-5
SS-168 Nautilus ex V-6

Dolphin Class
SS-169 Dolphin ex V-7

Cachalot Class
SS-170 Cachalot ex V-8
SS-171 Cuttlefish ex V-9


Note Narwhal forms her own (sub-)class, along with Nautilus (which class I thought Argonaut was also in, but apparently she, too, was unique).

Anyway, I'd love to present any in-progress pics you want to send me, Bill. And maybe also join you in a "Group Narwhal Class Build", with my long-planned Nautilus SS-168, too. Might could share some valuable sail findings!


Cheers,

-Matty