COR690 – Suitable for long journeys. The partially displaceable hull provides the most economic navigation at a cruising speed of 7 – 10 knots. For a slightly faster sailing, the hull allows half-sliding at a speed of 20 knots. Stability in bad weather is ensured by an inverted arch that prevents water accumulation and large storm drains to quickly drain excess water from the deck. Maneuvering of the vessel may be carried out by one person due to simple engineering design.