Check out these targets on the horizon:
War Fish Blog Blog of Wahoo Memorial Service activities October 9-11, 2007.
The Submarine USS Wahoo (SS-238) Bryan MacKinnon's tribute to his Grand Uncle, D.W. Morton.
USS Wahoo (SS-565) Stan Cook's tribute to his former home and SS-238 namesake.
USS Tang Memorial Keith Merwin's site dedicated to the Basil C. Pierce, Jr. USS Tang Memorial.
On Eternal Patrol Database and tribute to all lost US boats and submarine personnel.
FleetSubmarine.com US subs in WWII.
Fleet Boat Manual San Francisco Maritime National Park posting of NavPers 16160, a fleet boat training manual. 
World Submarine Network Ron Martini's Mother-of-all-SubSites.
Neal Stevens' Deep Domain USS Cavalla (SS-244) tribute and SubSim Reviews.
SubmarineSailor.Com Great site for vets and aficionados alike.
Torpedo Junction Online source for new and used submarine books.
SubmarineBooks.com Publisher of sub books and source for used submarine books.
USSBowfin.org Official site for USS Bowfin Park and Museum in Hawaii.
UBoat.net The premiere site for WWII German u-boat information.
EscapeFromTheDeep.com Official site for new USSTang book by Alex Kershaw.