LOA
hulls
6.60 m without rudders
Beam c/c
3.00 m
Beam catamaran
3.66 m
Beam on trailer
2.50m
Draft hull/rudders
0.25/0.54 m
Weight empty
380 kg
Weight CWL
840 kg
Parallel rig sail area 14.3 x 2 = 28.6m2
L/B hulls
1 : 13.7
Prismatic coefficient
0.568
L/B ratio center line
46 %
Construction time about
700 hours
Here
the next catamaran with a biplane rig. The DUO 660 is a logical
evolution of my other biplane catamarans. We have the most
experience with this rig from all designers who design for the amateur
boat builder.
As our other designs we use the ply(wood)/glass/Epoxy composite
system. This is still the best system for a very light,
cheap and easy to build boat. People will contradict me. But, I dare
you proof it that you can build a cat of the same size and lay out, as
light, for the same costs, and the same construction time.
The boat is a typical coastal cruiser/racer. We use, as on all
our trapezoidal cross section hull catamarans, the very effective
anti-vortex panels as leeway presenters.
These easy to build, compared to dagger boards or low aspect ratio
keels. The low draft of only 25 cm (rudders in up position) have the
merit that you can reach coves which for other boats are unreachable.
Beaching the boat is also much more easy. The nacelle is big
enough to seat four and sleep. A small pantry can be fitted as well. In
one of the hulls a chemical toilet can be fitted.
If you use a cockpit tent the boat can sleep up to four persons.
If required foam can be used in the front and back to make
the boat unsinkable.
