Technology and Operations  
This forum is for discussing technological & operational matters pertaining to U-boats. 
RE: Type IXD1
Posted by: Rainer Bruns ()
Date: February 14, 2001 02:22PM

Hi Richard,
Basic difference was the surface speed. They could maintain better than 20 knots, at which the engines gave off so much heat making it unbearable in the inside the boat. At economical speed (10kn) engines were smoking excessively. Cheers, RB

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Subject Written By Posted
Type IXD1 Richard Carr 02/14/2001 12:07PM
RE: Type IXD1 Rainer Bruns 02/14/2001 02:22PM


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