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Old 01-31-06, 02:55 PM   #10
pythos
Grey Wolf
 
Join Date: May 2005
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Default type XXI engines

The reason the type XXI had weaker surface drives was because the ship was designed to spend a vast majority of its time underwater. The diesles provided the power to the generators while snorkeling which was limited in speed due to occilations of the snorkle and periscope, which made periscope observations impossible above certain speeds, and the near loss of the first type XXI while on snorkle trials and a sympathectic harmonic was set up in the snorkle mast, which caused the mast to litterally snap. Snorkles were no joke when it came to sensitivity. It was only quick acting on the crew of that boat that saved them and it.

With this knowlege the weaker diesles were used.

The Wilhelm bauer's diesles are even smaller and weaker than the wartime version, but these were not connected in any way to the propeller shaft.
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