Vessel

Abstract

The present disclosure provides a vessel, thrust of which is less likely to be lost. A vessel includes a hull having a vessel bottom, and a propulsion device. The propulsion device has a propeller that can rotate about a propeller shaft penetrating a shaft hole in the vessel bottom, and generates thrust for sailing the hull by rotation of the propeller. The hull has the groove section, which is long in the front-rear direction, around the propeller in the vessel bottom. The shaft hole is arranged in the groove section.

1 . A vessel comprising:
 a hull that has a vessel bottom; and   a propulsion device that has a propeller capable of rotating about a propeller shaft penetrating a shaft hole in the vessel bottom, and generates thrust for sailing the hull by rotation of the propeller, wherein   the hull has a groove section in a portion of the vessel bottom around the propeller, the groove section being long in a front-rear direction, and   the shaft hole is arranged in the groove section.   
     
     
         2 . The vessel according to  claim 1 , wherein
 the groove section is formed from an intermediate portion of the vessel bottom in the front-rear direction to a stern, and   the shaft hole is located behind a front end of the groove section.   
     
     
         3 . The vessel according to  claim 1 , wherein
 a change amount of a width dimension of the groove section in the front-rear direction is 10% or less of a maximum value of the width dimension.   
     
     
         4 . The vessel according to  claim 1 , wherein
 a bottom surface of the groove section has a curved shape that protrudes upward in a side view.   
     
     
         5 . The vessel according to  claim 1 , wherein
 the shaft hole is arranged in a dent section that is dented from a portion around the dent section in a bottom surface of the groove section.   
     
     
         6 . The vessel according to  claim 1 , wherein
 the groove section has a gradual increase section in at least a part of the groove section in the front-rear direction, the gradual increase section becoming deeper toward the stern.   
     
     
         7 . The vessel according to  claim 6 , wherein
 a cross section that is orthogonal to the front-rear direction of a bottom surface of the groove section has a shape along an arc that protrudes upward, and   at least in the gradual increase section, a radius of curvature of the arc becomes larger toward a bow.   
     
     
         8 . The vessel according to  claim 1 , further comprising:
 a pair of the propellers arranged side by side in a width direction of the hull, wherein   the hull has a pair of the groove sections in a manner to correspond to the pair of the propellers, respectively.   
     
     
         9 . The vessel according to  claim 8 , wherein
 in the width direction of the hull, each of the paired shaft holes is located on an outer side of a center in a width direction of respective one of the paired groove sections in a plan view.