The hull was subdivided by 18 transverse watertight bulkheads. The hull was subdivided by 20 transverse watertight bulkheads. The NSC is constructed with a steel hull and steel superstructure with steel bulkheads. They were divided into 10 main compartments by transverse watertight bulkheads. The bunker was supported by longitudinal stiffeners and transverse bulkheads. The hull was subdivided by 13 transverse watertight bulkheads and had a double bottom. The White Star vessels were divided by transverse watertight bulkheads. The hull was divided by a 16 bulkheads into 17 watertight compartments. The magazines were protected by fore and aft transverse bulkheads thick. The belt was closed by transverse bulkheads fore and aft. The strakes were enclosed by transverse bulkheads of the same thickness. There were five watertight bulkheads rising all the way up to B Deck. The belt was closed by 2.5-inch transverse bulkheads fore and aft. The ship also had twenty-three watertight bulkheads. The watertight condition of the ship was guaranteed by the 13 watertight bulkheads.