Home Page of the Potvis (Dutch Dolfijn Class)
Page about the Dutch triple-hull Dolfijn class submarine by the ex-submariner Joop Jaspers. 
Home Page of the Bruinvis (Dutch Walrus Class)
Home page of the personnel of the Bruinvis, a Walrus class Dutch submarine.
Dutch Walrus Class
Nice page, includes some underwater sounds.
Holland Class
An excellent web site by Gary W. McCue. A lot of information about the inventor of the modern submarine. Gary made a full 3D computer model of the Holland boat, including all the internal equipment. Very impressive!
Norwegian Ula Class
Web site by Geir Isaksen showing pictures of the Norwegian Ula class submarine.
"Wilhelm Bauer" (German Type XXI)
Site about Wilhelm Bauer (1822-1875) one of the inventors of the modern submarine and the "Wilhelm Bauer" a German WWI submarine (ex U 2540).
.
U-48 (German Type VII B)
U-505 (German Type-IXc)
What a beautiful web site! Made by the Museum of Science and Industry, Chicago, USA.
The Hunley
Web  site about the Confederate Submarine H.L. Hunley by the Junior History Press.
The Flasher (Thresher Class)
Page by Ric Hedman about the USA nuclear sub The Flasher (SSN 613) also some information about its predecessor the Flasher (Gato Class, SS 249).

 

The NR-1
A nuclear powered research submarine. Great site!
Hydrosub
A home made submersible by Brian Walker 'The Rocket Guy"
USS Torsk
Website about the USS Torks. This submarine is on display in Baltimore, USA.