The unit is designed for 51 in water depths of up to 250 feet. The unit is also designed for ocean 52 , afloat on its own hull with its legs intact and fully raised so that the spud can tip is 12.38 feet below the bottom of the hull. The lightweight is the condition of the unit before loading 53 , fuel, water, or stores. For the Coastal Driller, the lightweight 54 the basic hull weight and the fixed weight. The fixed weight is that which is permanently attached to the unit, which includes a portion that is 55 and a portion that can be moved.