[C320-list] GFO and Autoprop first report

[Rod Boer]

Hi Dave,

I typically get about 5.8 kts at 2800 RPMs with a clean bottom.  Several 
years ago I calibrated it against a measured mile between buoys near 
Annapolis and came up with a calibration factor.  I have the standard three 
bladed propeller.  Maybe we have more stuff on board.  I know that my bottom 
is not very smooth as there has been quite a bit of delamination of the 
bottom paint in recent years.

Rod Boer
Odyssey, #688

----- Original Message ----- 
From: "Dave Anderer" <danderer at udel.edu>
To: "C320-List" <C320-List at catalina320.com>
Sent: Thursday, May 11, 2006 3:20 PM
Subject: Re: [C320-list] GFO and Autoprop first report


> I've got very little time on the boat, and none on other 320s, but:
>
> - The tach was checked during the survey last fall; reported to be 
> spot-on.
> - The knotmeter paddlewheel had to be replaced.  I did so, and took the
> time to calibrate it accurately by doing multiple runs (with and against
> the current) against both know landmarks and the GPS.
> - The bottom is clean through rough.
>
> I see 6 knots at 2700-2800 RPM.  I frankly don't understand some of
> these high speeds folks are quoting.
>
> Of course, it was the same thing with the previous boat.  I went through
> the same process, and other folks always seem to report higher speeds.
> Reporting bias?  Or maybe I just buy slow boats.
>
> Dave
> Meanderer II
> #642
>
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