All about the NR-1 really cool
Shows Maneuvering room panels and much much more
Very comprehensive sub page
Ron Martini's Subase (a lot of Sub links STUFF).
Cool pictures you can view 360 degrees
United States Submarine Veterans Inc.
Very good general sub site
Independence Seaport Museum,Philadelphia, Pa. (Where Becuna is).
Nautilus Museum,(Site of GW's Sail)
WWII German UBOATS Link (GREAT HISTORY SITE)