Special Forces underwater craft
UOES3 (Button 5.60) dry SEAL Delivery Vehicle
COMSIBIN's submersible boat
Proteus advanced SDV
SWSC (Shallow Water Combat Submersible) US Navy SEALs next gen' SDV
Cos.Mo.S CE2F chariot
Sphyrene (Barracuda) SDV
SWUV (/ PSM3G) advanced SDV (includes French SDV history)
Naval Spetsnaz in Hybrid Warfare (Russian SDVs and DPVs)
Dolphin SDV-X
Piranha SDV-X
SubSEAL advanced SDV
Sleeping Beauty (Motorised Submersible Canoe) of WW2
SubCat SDV
Rotinor BlackShadow 730 and Divejet 414 Diver Propulsion Vehicles
P3M JetBoots Diver Propulsion System
TorpedoSEAL Diver Propulsion Device
Gabler Sea Devil Swimmer Delivery Vehicle
Bonex HP and HP Shuttle Diver Propulsion Vehicles
Ortega Mk.1 Swimmer Delivery Vehicle
Vogo 'Chariot' SDVs (SDV-300, SDV-340...)
Triton-NN Submersible Boat
USN Closed-Cycle Energy Source SDV project
Marex Type-A (A2, A4, A5, Comex Total-Sub-01) SDVs
Polish Blotniak SDV
EMT FWS-1 to -5 Barracuda SDVs
Taedong-B 'Kajami' ('Zulfikar') submersible boat
Al-Sabehat 15 Swimmer Delivery Vehicle and related development
Sea Chariot Swimmer Delivery Vehicles
Special Forces surface craft
CCH (Combat Craft Heavy) SEALION and Alligator Semi-Submersible Boats
Specialized Marine Craft (MSC) Sepcial Forces intercptor
World survey of Special Operations Craft
WP-18 Tactical Strike Craft
Styx riverine Special Forces craft
Submarines
World survey of AIP submarines
Barbel Class - the last front-line diesel boats int the US Navy
Japanese Ha201 Sen-Taka-Sho fast attack submarine of WW2
infographic of North Korean MS-29 YONO Class midget sub
P.09851 KHABAROVSK and KANYON (Status-6)
SIERRA Class SSN
Stalin's Super Sub, Project P-2
Piranha Class (LOSOS)midget sub
Russian Losharik spy sub
USS Halibut
USS Seawolf (SSN-575)
Russian X-RAY Class spy sub
Russian Typhoon Class SSBN
Russian Sarov experimental sub
First DDS - Type-IIIA U-Boat
MSV-75 midget sub design
INS Arihant, Indian SSBN and .2
Iranian Fateh Class SSK
History of Israeli subs
North Korean SSBN program - Sinpo Class
HDS-500 Midget Submarine
Maritalia GST-23+ Midget Submarine
Crocodile 250 Midget Submarine
WW2 German Delfin midget submarine with AIP