CRYSTAL WINDLASS. The CRYSTAL windlasses are geared toward the smaller vessel, generally 34ft or less and are provided with casings, which ensure that the motors are completely watertight. Innovative and attractive, of compact dimension, they are the best solution for those who need vertical windlasses without compromises. Oval base in chromed-plated bronze. Rope and chain on a single gypsy. 800W. Boat sizes 7-11 m.