below is a list of websites that I have,please add more if you wish.
http://ibiblio.org/hyperwar/USN/ships/ships-ss.html USA navy submarine's 40 - 45
http://www.uboatarchive.net/ U-Boats
http://www.uboat.net/index.html U-Boat's
http://www.navsource.org/archives/subidx.htm Nav Source,link takes you direct to submarine section
http://wwiiarchives.net/servlet/ WW2 Archives,pic's, history's and some recorded footage
http://www.pigboats.com/subs/legends.html S-class boats and other pre WW2 sub's
http://www.ww2db.com/index.phpWorld War II Database
http://carotio.awardspace.com/news.htmlSH3-4 MOD's,and additional links to MORE websites.....lots of info
http://www.dutchsubmarines.com/The Submarines of the Royal Netherlands Navy 1906 - 2005
http://www.combinedfleet.com/ss.htm Submarines of the Imperial Japanese Navy
http://www.valoratsea.com The U.S. SUBMARINE WAR in the Pacific 41-45
http://www.oneternalpatrol.com/ site dedicated to US Submarine force that lost their lives
http://www.battle-fleet.com/pw/his/uboat9.htm WW2 German naval types and history's
http://guppysubmarinetribute.homestead.com/Tribute.html US Guppy class history
http://www.uboataces.com/uboat-type-ix.shtml U-Boat history's ,types
http://www.submarinemuseums.org Submarine Museums in the USA
http://www.maritime.org/fleetsub/index.htm US Fleet submarine manuals
http://greek-war-equipment.blogspot.com/ A history of military equipment of Modern Greece (1821 - today)
http://www.ubootwaffe.net/ Kriegsmarine and U-Boat history
http://readyayeready.com/index.php RCN news and archives
http://monsun-uboats.blogspot.fr/ Operation Monsun U boats in the pacific
http://www.u-boot-hahd.com/forums/index.php U boat forum
http://www.naval-history.net/WW2Camp...ritishSubs.htm British Submarines of WW2
http://i-16tou.com/ Jap Midget Sub Attack on Pearl Harbor
http://english.battlefield.ru/ downloadable PDF files on Soviet Submarines (and other wepons) of WW2
http://www.dutchsubmarines.com/ Dutch Submarines
http://www.fleetsubmarine.com/sublist.html Complete list of US submarines that saw service during World War II