Solar Catamaran Kit. This catamaran glides smoothly over water with a solar drive. Changing the position of the motor determines the direction of propulsion. Simply built on two empty bottles (0.5 - 1.5l bottles not included). Illustrated instructions with templates. Skills required: scribing, drilling, sawing, filing and assembling with soldering. Clear instructions and patterns. Size: 190 x 220 x 130mm.