But what I meant was there must be a reason US chosed HMS Gotland instead of all those others SSK:s that is out there all over the world, and wants to have her for at least one more year…

the reason is simple, because they are available. as sayed before no other state would give away a ssk+crew for one or more years only to train the us-navy.

I can tell u, shes the most quite , most deadly, most sophisticated, most lethal SSK out there. And she has operational AIP, probably only Sweden has that….and has had that since 1988

the germans also convert one of their type 205 subs with an aip (fuelcell) in 1987/88. today germany has the u-212 with fuelcell aip in service, italy also (in service?). greece and the rok are building u-214 in licence with fuellcell aip and the french are stil working on mesma. so there are other subs and other aip-systems out there. so i can not see the point why the swedish subs are the most quitest, most deadliest, most .. most …

and afaik the first sub with an aip was a german one. the v80 was equipped with a walter turbine and reached more than 28 kn in 1940.