Favored by skippers and crew, Harken Battcar systems let you raise, douse, and reef the main instantly from the cockpit, even when close reaching in a big breeze. Battcar systems outperform in-mast or in-boom furling, cost far less, and sails don’t need to be recut. Typical boat size: Monohulls to 11.3 m (37'); mainsail area under 32 m² (350 ft²). Multihulls to 9.1 m (30'); mainsail area under 26 m² (275 ft²).