I thoroughly recommend the following websites. In no particular order,...
ASSOCIATIONS & GROUPS
- Royal Navy Mine Clearance Diving Officer's Association HERE
 - Underwater Heritage Trust, UK HERE -restoring and replicating WW2 British underwater vehicles
 - Royal Australian Navy Clearance Diver's Association HERE
 - Fifties Frog HERE -for Underwater Demolition Teams
 - Submariner's Association, Barrow Branch HERE
 
SDV / SUBMARINE BUILDERS * Paul Moorhouse HERE * James Fischer Defence HERE * Marine Specialized Technology (MST)HERE * Stidd Systems HERE
BOOK RELATED SITES
- SEALs (Naval Special Warfare) history book HERE -Must read
 - Michael Wood's photos HERE -excellent photographer, former UDT and SEAL
 - Steve Waterman HERE -Author and USN diver and photographer
 - Iron Fist From the Sea HERE -South African SF
 
MUSEUMS
- Navy UDT / SEALs mMseum, Florida, US HERE
 - Royal Marines Museum, Portsmouth, UK HERE
 - Museum of Western Australia, AUS HERE
 - Eden Camp Museum, Yorkshire, UK HERE
 - Historic Dockyard, Chatham, UK HERE
 - RN Submarine museum, Gosport, UK HERE
 - Submarine Force Library, Connecticut, US HERE
 - Marinmuseum, Karlskrona, Sweden HERE
 - Man in the Sea Museum, GFlorida, US HERE
 
FORUMS AND COMMUNITIES
ONLINE SOURCES
- Covert Shores Blog HERE