On 20 Dec 2006 11:27:00 -0800, "druid" wrote:


Don W wrote:
We've got a Catalina 27 with a 9.9hp 4-stroke
outboard. I'd estimate that the boat goes 5 to
5.5 Knots with the outboard at about 3/4 throttle.


Thanks, Don! That's about what I expected: maybe 6knots
balls-to-the-wall under ideal conditions, more like 5 for navigational
estimating purposes.

Anybody have any more accurate readings?

6.7knts for a 25' waterline? 1.34xsqr root of the waterline? It's just
a theory.


druid
http://www.bcboatnet.org