The vessel, which is 26 meters in length, is extremely stable as a result of two floating bodies that form part of the hull. This construction makes it highly seaworthy. The small surface area on the water-line, means that waves have a minimal impact on the vessel. Moreover, stability fins in both the floating bodies, which are computer controlled, enhance the overall behaviour of the vessel when underway by controlling and minimizing its rolling and pitching movements. Additionally, the SWATH can be lowered in the water (through increasing its ballast) by around 80 centimetres within the space of five minutes, enabling ships with a lower freeboard to be boarded by pilots more easily and safely.