| 摘要 |
PROBLEM TO BE SOLVED: To provide a vessel which advances with a helical pump which is further improved in promotion output.SOLUTION: The vessel, especially a passenger ship, has at least one shaft line 3 equipped with a propeller consisting of a rotor, one or a plurality of stator 40 and a helical pump 4 with a nozzle 41, wherein the vessel includes a hull 2 which has a concave portion form in a substantially opposite side to the helical pump 4; a curve which divides the concave portion form has two inflection points in a vertical cross section in a longitudinal direction passing through a rotation center of the rotor where one inflection point is arranged upstream of the helical pump 4 and another is arranged downstream of the helical pump 4; the curve has a tangent T parallel to the axis of the shaft line 3; and the tangent concerned is arranged upstream of the helical pump 4. |
