[PCW] Powercat performance, was PDQ Performance

[sealubber7 at aol.com]

A number of years ago I did several thousand miles on a PDQ 32 sailing cat. I don't remember the numbers exactly, and don't know if there is any comparison in hulls, but we got almost 80 % hull speed with one engine and subsequent?half the fuel burn. Power was Yanmar 2GM times two, about 18 hp each,?and the boat was fast, 7 to 9 knots. I'm thinking we got about 1/2 gal. per hour per engine at about 3000 to 3200 rpm.


-----Original Message-----
From: Georgs Kolesnikovs <georgs at powercatamaranworld.com>
To: Power Catamaran List <power-catamaran at lists.samurai.com>
Sent: Tue, 8 Jul 2008 9:20 am
Subject: [PCW] Powercat performance, was PDQ Performance



All hands--

Do any others have performance data to share?

Henry of Sno' Dog wrote:
>Being an engineer, and prompted by a recent discussion on the PDQ Forum, I
>decided to compile two years of Sno' Dog cruising data and put it into tabular
>and graphical form.   The data is now posted on our website at:
>www.snodoglog.com/Performance.html
>
>It shows mileage ranging from 3.8 n mi/gal (4.4 stat mi/gal) at 7 knots down
>to 2.4 n mi/gal (2.8 stat mi/gal) at 14.5 knots (16.7 mph).

If you think fuel burn in gallons per hour, Henry's diesel-powered 
PDQ 34 burns 2 gallons per hour at trawler speed (7 knots) and 6 gph 
at cruising speed (14.5 knots).

My gasoline-powered TomCat 24, equipped with twin Yamaha 100s, burns 
3.5 gph at trawler speed, compared to Henry's 2.0 gph.

At his cruising speed (14.5 knots), I'm loafing along at 6.5 gph, 
compared to his 6.0 gph.

At my cruising speed (20 knots), I burning about 10 gph, just a tad 
more than Henry does at that speed.

My top speed, loaded for cruising, is a little over 30 knots with 
fuel burn at about 17 gph.

My numbers are based on our first 10-day cruise. Please note the 
TomCat is a tiny boat compared to the PDQ. Our all-up cruising weight 
is maybe 8,000 pounds. I'll develop a more engineer-like method of 
presenting our numbers in time.

--Georgs
-- 
Georgs Kolesnikovs
TomCat 24 At Last!
Frenchman's Bay, Lake Ontario
http://tomcat-tales.blogspot.com
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