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Old 10-19-08, 09:57 PM   #14
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Electrician's Mate
 
Join Date: Feb 2007
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Be careful about comparing the seawolf to the 688, they are no doubt talking about the unimproved 688, not the 688(i). Checking the LWAMI DB (and assuming I am remembering how to do this )

....................Seawolf.........688........... 688(i)
SL@ rest...........55..............62.............58
SL@ 5knts.........57..............65.............60
SL@ 20knts.......64..............73.............68

So under LWAMI the Seawolf at 20 knots is already very close to the sound level of a 688 at 0 knots. (64 v 62) All those numbers (I believe) presume you are not cavitating.
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