Online discussion board for psubs.  Upload pictures and add yourself to the map.

Frappr

Professional organization.  Some good references information on current professional submersibles.

Marine Technology Society

UK based submarine and ROV sales and engineering.

Silvercrest Submarines

This guy made a submarine out of concrete.  Really great idea.

Wilfried Ellmer

Diver propulsion vehicle.  Not to expensive.

Torpedo DPV

Nice if you can afford it.  They couldn’t fit my bubble helicopter on the back, so I wasn't interested.

US Submarines

Nice ambient pressure commercially available subs.  Various different configurations available.

Sports Sub

Doug’s website is full of useful information as he details his hybrid speedboat/sub project.   This is a particularly informative site.

Doug Jackson

Pat Reagan’s site is dedicated to Jules Verne’s 20,000 Leagues Under the Sea.  Including a functional psub replica of the Nautilus.

Vulcania Submarine

Carsten Standfuss and his team are building the ultimate psub.  The only one that could probably be described as a proper submarine.  Also some good links and pics of other psubs.

SITE IS IN GERMAN

Euronaut

Builders of professional research and recreational submersibles.  Some nice videos on the website.

Seamagine

Site aimed as a teaching resource for schools, but some interesting history, sub rescue and basic info.

Office of Naval Research

George Kittredge’s site about his pedal powered K-250.   Website seems to have gone offline so this is a link to the archives.

U-EM

A 1ATM pedal powered sub built by a group students in Florida.

Pedal Sub

Nuytco designs, builds, and operates atmospheric diving suits, submersibles, remotely operated vehicles, as well as specialty equipment for commercial diving.

Nuytco Research Ltd

Seems to be a website specializing in professional submersibles and ROV’s for sale.

Sub-Find.com

Another professional company offering tourist and personal submersibles.

Tarw—Trading OY Ltd

A 2 man submersible built by Doug Privitt.

Delta Oceanographies

Home of the Johnson Sealink submersible.

Harbor Branch Oceanographic

UK Based 3 man tourist sub you can take a trip in.   Based at Vobster Quay diving centre near Bristol.  Minimal cost for a ride.

MORZH

Woods Hole Oceanographic Institute web site.  Details of Titanic finding “Alvin”.  Plus a nice web based simulator.

Alvin Simulator

Psub related discussion board with some interesting articles and links.

SUB-LOG

National Oceanic and Atmospheric Administration.   US site with some interesting undersea info and links.

NOAA

French PSUB builder.  Nice looking acrylic pressure hulls.  Website is dreadful and very slow.

Personal Submersible Industries