Following extensive testing of the Rangeboat, development began on a family of boats based on the same principles.

This 14m variant was commissioned by a Dutch client who wanted to retain the same layout but with more generous proportions. .

At this size there is the option to have a 2 cabin layout with 1 double and 1 twin, which could prove to be a very practical solution.

14m
3.76m
0.6m
7t
186kW
20 knots
15 knots
500nm

This 17m version offers 6 berths in 3 double cabins with 3 heads and 2 showers. When fitting a block of cabins into the forward end of a vessel like this there is often a problem resulting from the fact that the necessary access corridor occupies a lot of prime volume at the expense of space in the cabins where it is needed. In this case we have suggested placing the galley in such a way that it also serves as the corridor, which we feel is an effecient arrangement.

As the performance of these semi-displacment hulls is very much linked to their waterline length it follows that the bigger boats are more efficient for a given speed. That said it is important to understand that this hull form should not be used if cruising speeds in excess of a speed/length ratio of about 2.5. are required - in this case 18.4 knots.(i.e.2.5 x the square root of the waterline length in feet). It would not be practical to install more power than is necessary to achieve a speed/length ratio of about 3.5.