Yust a quick note: There are some pictures of a 1944 german oneman highspeed (17kn) electric submarine on the web: The orgininal design was close-petrol-cycle but the three prototypes were driven by a torpedo-engine electric set. WWW.Modelluboot.de than the button : GFK-Rümpfe than the button : Delphin and after that : mehr Bilder one picture show that is can also fly.. Carsten >