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Old 03-01-15, 06:28 PM   #12
Tupolev
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http://uboatarchive.net/Manual/Manual.htm

Check out page 17 & 18. The speeds for the given engine telegraph and RPMs are on page 14.

Unfortunately, the the to reciprocal heading data for submerged isn't available, but I think the rest kinda helps drawing a good mental picture of what a VIIC can do.

Turning a small circle doesn't mean much if it takes nearly 3 minutes to turn 180 degrees.
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