It's not a "Spray" it's a greatly modified Roberts 434. In fact, all I used from the plans were the frame patterns, but I changed them from 44" centers to 46" centers, made her flush deck
forward and changed the transom angle from 30* to 45* to match the bow. All told, it turned the rather squat (IMO) 434 into a 48'er. A wide radius section instead of a hard chine makes her prettier, and more "professionally yard-built" looking. All done in a field, by myself.
The keels are twin fins with bulbs, with lead cast into each bulb. All fabricated on site...but I had a lot of boatbuilding and welding and fabricating experience before hand. Very robust keel
roots with extra framing inside. The hull
is 3/16, the deck
1/8, but the keel
roots are 1/4" plate 2' X 10'. And extra very stout intercostal framing etc etc.
She has an integral 180 gallon diesel
tank, and can motor
for 2 straight weeks at 5 knots.
She has twin 400 gallon fresh water
, also integral of course, and with one full and one empty, she heels 10* at the dock
. In practice, I let the water
run by gravity to the low tank before tacks on the ocean. That 10* ballast heel makes a big difference going to windward, when you are short tacking up a channel you don't switch ballast, and you really can feel the difference.
It took us two months from Guam
with 4 aboard, and we were taking solar
showers at will all the way. In practice on long transits I leave with about 600 gallons of water, and eat into my ballast with all the water anybody needs. In dry islands, I can give water away to folks on boats with limited tankage, which is always welcome. I even have a welded and enameled bathtub, the outboard
side is the hull
, the bottom is above the waterline so it drains like a sink. It's also great catch-all for wet towels and foulies on passages.
(The thing between the fin keels is the pile of sandblasting sand that I let out of the bottom of the hull via a small temporary hole.)