Dry Deck Shelters (DDS) operators are an elite club and only a handful of top-tier Blue Water Navies have this capability. Despite this the popular image of a SEAL Delivery Vehicle (SDV), made popular by the US Navy's SDV Mk.VIII, is a small midget sub which specifically operates from a DDS. Therefore there are relatively few types designed from the outset for be carried into war in a DDS. The SubSEAL produced by Britain's James Fisher Defense (JFD) is one of these SDVs.... Read More >....
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Demystified - new low-profile Iranian SDV
Around this time of year it is usual for Iran to reveal a few more of its super weapons. Scared Defense Week occurs in late September and is accompanied by multiple military parades and static displays. Hidden amidst the dazzling array of missiles and UAVs, Swimmer Delivery Vehicles (SDVs) do not get very much press attention (journalists being widely ignorant of what they even are!???!!!). This year was no different. But on display was a slick 'new' SDV with a low profile hull without any canopy or viewing ports. Here's why it's not actually new, but why it is still interesting.... Read More >....
Demystified - Taedong-B submersible infiltration craft
Iranian media and internet claims that it is of Iranian orgin are plainly mistaken. The design is a gradual evolution of small infiltration craft used to run agents into South Korea..... Read More >....
21st Century Human Torpedo - Gabler SDV
Dubbed the Sea Devil, Gabler's two-man SDV (Swimmer Delivery Vehicle) is a unique reintrepration of the Human Torpedo concept .... 
Proteus SDV
UPDATED : If you were wondering which SDV is the most advanced in the world.... 
Special Forces diver technoloy - DSG Supercavitating Ammunition
DSG Technology of Cyprus/Norway have developed a supercavitating underwater round which can be adapted for standard rifles, allowing Special Forces divers to fight both above and below the surface. Read More >....
News - Korea building new HDS-400 midget submarine
A few years ago South Korean submarine builder Hyundai unveiled the stunning HDS-500 midget submarine design. This week Janes' reported that Hyundai had begun constructon of a 40m long midget submarine for an undisclosed customer. Read More >....
Forgotten Super Subs of the Cold War - Italian GST-23+
At the end of the Cold War a small firm from Italy promised to shake up the submarine world with pocket-sized AIP (Air Independant Propulsion) submarines. The designs represented a completely new way of constructing submarines. A series of prototypes proved the technology but the end of the Cold War combined with commercial factors consigned most of the designs to the drawing board. Today they are almost forgotten. This article deals with the GST-100 (aka LWT-23/27), 20GST48, S-300CC and MS-200 designs. Read More >....
Shark Subs - Shark Observation Vehicle
Not an SDV or military craft but interesting nonetheless. Read More >....
Return of the military canoe
Since WW2 folding kayaks have been a stable ingredient for most Western water-orientated Special Forces. The British and Australians who led the way but Germany and the United States also employed them. After the war they remained in British service and were slowly adopted by most major Western Special Forces including Italy, France, Israel, Netherlands, Norway, Sweden and of course Germany. The stand-out exception is the US Navy SEALs who preferred inflatable boats although they have been toyed with by SEALs. The ubiquitous type is the German produced Klepper Mk.13 (aka Aerius) which was even adopted by the British and Australians - other manufacturers also make closely equivalent types and the term 'klepper' is applied to all. Military canoe operations were formed around the 'Swimmer Canoeist' concept originating in WW2 with what is today the Special Boat Service (SBS). Read More >....
