PETESBOAT, MOTOR/SAILER, 24'X7', 1500
This boat was designed for Pete James,
brother of Karl James who built the original Jewelbox.
Petesboat is an overall enlargement of Jewelbox and I'm
guessing a 50% increase in volume and weight over Jewelbox.
The hull shape is patterned after my Twixt and thus has
a warped V entry to reduce pounding and a wide stern to
improve performance under power. There was much discussion
about whether the warped V entry was worth the extra work.
Converting to a simple flat bottom entry would be easy.
On Twixt I'm quite certain the V is worth the work and
Ed Heins praised the V entry on his Tween,
but perhaps not on these larger boats.
Unlike Jewelbox, Petesboat is supposed
to be a planing motorsailer. Picking through the numbers
in Dave Gerr's writings, and assuming Petesboat will weigh
2100 pounds ready to go, I figured it takes 40 honest
horses to plane out at 17 knots. 15 horses will push it
9 knots and it looks like nothing in between makes much
sense. Pete used it with a 4 horse motor the first season
and reported 5 knots on the GPS with it. Second season
he fitted 30 hp and said it planed at 15 knots full throttle.
Then he purchased a new 60 hp outboard which gave 20 knots
at full throttle. He said she handles very well although
he didn't try any hairpin turns. He's still tinkering
with trim tabs to lower the nose a bit under power. Fuel
consumption with a 60 hp engine would normally run about
6 gal/hr so you see the down side of trying to "cruise"
with a planing boat.
The sail rig is a 200 square foot balanced
lug with a single pivoting leeboard. The rudder is offset
to one side and the big motor is on centerline. We motor
with the rudder retracted and sail with the motor retracted.
Pete reports the effect of all the offsets in the rigging
is nothing - she handles the same in both tacks. He says
she always goes about 8.5 knots on the GPS reaching in
a good wind.
The plywood bill looks like six sheets
of 1/4", 5 sheets of 3/8", and 14 sheets of
1/2". The tinted Plexiglas for the windows can get
expensive and it will often be worthwhile to get the plastic
companies to bid against one another. In spite of its
size this is still simple jigless construction.