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. CB and slider Battcar systems use the same track; mix and match to optimize performance and budget. Typical boat size: Monohulls 15.2 - 18.3 m (50 - 60'); mainsail area under 83 m² (900 ft²). Multihulls 12.2 - 15.2 m (40 - 50'); mainsail area under 65 m² ( 700 ft²).