04-07-15, 12:38 AM
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#13
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Silent Hunter 
Join Date: Sep 2010
Posts: 3,975
Downloads: 153
Uploads: 11
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For those who like approximate methods, you can try the SPEED PLUS 3 method.
Does it work? I don't know, but it was used in RL by at least one S-boat crew. (Don't ask me which one.)
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