This is an appeal for information: if you recognize any of these vehicles or can help identify them please contact me at hisutton.author@gmail.com

A) US SDV, possibly UDT or SEALs related. Looks like it dates from 1950s or 1960s

B) 1980s West German SDV used by Kampfschwimmers

C) Current German SDV used by Kampfschwimmers

D) Recent, UAE or Omani SDV, Possibly 1-man

E) Iranian SDV, probably experimental

F) Iranian SDV #2, possibly commercial design imported

G) Some sort of small propulsor once used by Israel. Probably 1960s

H) Propulsor tested by Royal Navy (diver is wearing CDBA rig), c1970s

I) British canoes, possibly from WW2 or immediate postwar period