A hull structure has a chine serving as a boundary between a broadside and a bottom of a hull. The hull has a configuration in which the hull has a maximum depth in a vicinity of a central position of the hull, the chine is provided so that its level position becomes gradually lower from a bow side toward a stern side, and the bottom has a cross-section having a substantially V-shape from the bow toward the stern, the V-shape having an inner angle becoming gradually smaller within a range of from about 80° to 100° from the bow toward a central portion of the hull and becoming gradually larger from the central portion thereof toward the stern.