Hi Submadmans.. 20.Nov.2002 I looking just now for a used but still good 40-50 KW DC Dynamo. Will use it on the surface as Battery Charger and underwater as Electric main drive. Also I looking for a about 30-40 Kw DC to AC (380-400 V 50Hz) converter (rotary type unit also possible). Any cheap offers welcome.. Contact : Carsten at Merlinsub@t-online.de