The Castoldi waterjet unit type 03 is the smallest unit of the Castoldi range and is the suitable propulsion unit for small pleasure and work boats, having both semi-planning and planning hulls. The easiness of installation, the very low maintenance required and the long life are the most important characteristics. The water jet unit type Jet 03 can be coupled to diesel and petrol engines developing a power from 10 up to 60 HP (depending on the r.p.m.)