Which group of the US submarine S-class of 1918-1921 is this?
1st Lake type, S-2 (SS-106) or
S-42 (SS-147) - S-47 (SS-152)
http://picpage7.tripod.com/identify/ss105class.jpg
Google, all of my books, and all the webpages I searched didnīt help...
Cheers!
Friedrich Kappes
The FriedrichFiles