The ECOnomy power catamaran is an affordable DIY power catamaran. As the owner proved the boat is a capable coastal cruiser. The inside layout is the same as for the ECO sail version but the under water ship is changed. The cockpit is wider and has a size of 1,45m x 2 m. With the bigger size normal deck chairs can be used. With a cockpit cover two more can sleep on the boat.
Accommodation is simple but practical.
Because of the easy driven hulls the boat will travel at about 12 knots with the a 15 HP outboard engine. But practice showed that a single outboard of 20 HP is more feasible. Less noise and lower costs. The boat has a double bunk, but the cockpit is big enough to sleep 2 more persons. For construction and list of materials see ECOnomy cruiser drawings. The difference is that you need no rig, rudders and dagger board. With the low weight of about 325 kg including engines the boat can be towed behind a relative small car.
Construction is as always the (ply)wood/ glass/Epoxy construction system. The hulls are V-shaped with vertical sides. Easy to build also by a beginner. For cost estimation load down the list of materials. Go to bill of materials.