28 catalina prop size

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Floyd Jones

My boat has a right hand prop 13dia 12 pitch 2 blade I run out of engine rpm well before I can get near huul speed. The best I can do is 5kts in flat water. Any sugestions? We basically use the boat to cruise. Thanks in advance for any help. Floyd
 
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Floyd Jones

catalina 28

I have an Universal 25 hp diesel. I run at 3000rpm to get all the boat speed I can. I would like to run at maybe 2500 and get 6kts.
 
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floyd jones

prop size

Universal 25hp. I have to run at 3000 rpm to get max speed. I would like to get to hull speed at about 2500 rpm (6kts)
 
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