Nice nice! Where did you find that?
Anyway, dug up some more. There were apparantly some problems with the fuel, - tanks had to be completely sealed, or it would eat through the metal, etc etc. Wonder if it would have been faster that way though.
I'll ask the old geezer, he talks about stuff like that quite willingly :=)
He spent the war on a minesweeper (he is an engineer) somewhere in the baltic I belive. Six to nine sweeps with electic spools pulled behing a wooden boat was the routine to give "allclear".
Must have been driving folks nuts
