The 0987-RZ-05 part of Marathon is a closed-circuit racing yacht designed for use in large-scale, long-distance regattas. It features a lightweight construction and a large, low-drag sail plan, enabling the boat to move quickly and efficiently through the water. The 0987-RZ-05 also includes a state-of-the-art navigation system, making it easier for sailors to track their progress and find their ideal path during the race.