Bud/Jay/ or anyone else..............When I installed the B38 in Tamzin (W32) several years ago I reacall Bud had me fill out a performace grid, ie KTS at various RPMs in still water.  I assume he had other 'new installs' do the same thing and was wondering if the data has ever been compiled into an 'average' performace curve or data set.  I think it would be a handy thing to have as a very good indicator of hull or prop fouling.

Larry: 

Bud is on a cruise and will be back in a week or two... 

There are  lot of variables that can affect those numbers - as you might imagine. 

Looking at my YouTube channel...I found a movie ... https://www.youtube.com/watch?v=EZ3CWvUHSkU - note that the gps speeds on the screen need to have 1.5K subtracted...for a following current.

Here is another movie sailing post fairing. https://www.youtube.com/watch?v=HcdrmwL70og

I usually get 5 K hull speed at 2000 RPM is calm water and no wind... 

I'll look around or take some tests next time I have the right conditions. 

HTH

Jay