Author Topic: Pearson 323 boat speed under power?  (Read 327 times)

Stuart Farrell

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  • City: Alameda
  • State: CA
Pearson 323 boat speed under power?
« on: October 07, 2022, 12:02:10 AM »
I was wondering if I could get some input regarding boat speed under power at your cruising rpm.

I recently changed engines on my Pearson 323 and added a feathering  propeller, and the pitch of the new prop is was off, I am under pitched as at cruising rpm I am at 5.5 knots, and if there's wind and waves I am at only 4.5!!!!!

Before the engine change, I was at about 6 to 6.2 knots at cruising rpm. How does that compare with everyone else?

Thanks for any input, cheers!

Stuart Farrell
Pearson 323.   Osprey


Dolce_Vita

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Re: Pearson 323 boat speed under power?
« Reply #1 on: October 11, 2022, 10:05:01 AM »
Our 1977 P323 is driven by a 25HP Atomic 4 gas engine, and has a 3-blade 15R8 prop driven thru a 2:1 V-drive.  In calm water with a clean bottom, we can get it up to just over 6 kts @ 3100 RPM.
@(^.^)@  Ed
1977 P-323 #42 "Dolce Vita"
with rebuilt Atomic-4