5/13/10

The original 34 DUCK seemed the smallest the
idea could be and work at all as at a semi-functional cruising
boat. Sure, we've all seen smaller, but it just doesn't "work."
The galley isn't quite big enough, the engine area is cramped,
there isn't much headroom over the bunk, and forget storage. There
isn't any. I've written a fair amount about the 34 and will refer
youto the 34 spiel rather than repeating it all here!
Anyway, I got studying her after the plans were done and realized
we could give her the "stepped" tranny without loosing
any interior to speak of. Of course now there's even less deck
space, but that's the compromise when you have such a small boat.
The original 34 was a plywood design but I think she can be steel
too, so steel plans are being worked up. Steel makes sense these
days.

Power is a 40 to 50 HP Kubota diesel although
an 80 Deere is drawn in this view..These are strong little engines
and well proven. She has a full width engine room, 6' long. Access
to the engine can be from a door in the bulkhead in the aft cabin,
a large hatch in the pilothouse sole, and another door behind
the companionway ladder in the fwd. cabin. I would use the big
hatch in the sole, and the door behind the companionway ladder.
This is the "biggest" DUCK for the length and
is sorta pushing the "troller" idea but she's still
a DUCK and I think would be a lot of fun for recreational use
and coastal cruising. Yes, she could make passages but I personally
would want to go bigger if I planned much of that. Not for safety,
but for "elbow room!"
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HYDROSTATIC
CALCULATIONS RATIOS CENTROIDS |
And here's how the computer say's she'll perform in FLAT conditions. Let me repeat that; FLAT CALM conditions! I quote "The Computer" frequently and recently read in a boat forum the comments from some Canadian character that my numbers not realistic at all. The thing is they aren't "my" numbers. I get them from a computer program that evolved into Autoship, which is more or less the industry standard. Supposedly it's calculations are based on the system used in "Skene's Elements." I use the same program for figuring the hydrostatics and offset table. I don't know about today but it used to be practically everybody in this bidness used the same program in their design work.
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Figure one gallon diesel gives you about 18
HP an hour to get an idea of fuel usage in CALM conditions. Benno
& Marlene cruise with their sails up, running the engine
at a fast idle. Or, no engine in 15 knots, where the boat goes
4 knots. V/L ... Knots ....Projected HP Required |
