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- Does not support the weight of the hull. of the hull.
- Melted in air than in water Absence is responsible to pass along the longitudinal strength of the hull plating and deck. The top floor deck plating and the upper surface of the hull watertight to prevent flooding inside the
- Pulled into the pump stirred installed Pulled into the pump stirred installed block is placed on top of the dock on the bottom of the hull. poison in the winch device is installed on both sides of the dry dock ship safely increases the strength