Sailing device and marine vessel

Abstract

A sailing device includes a base connected to a lower end portion of a mast and a proximal portion of a boom, and rotatable in a plane perpendicular to an upward-downward direction of a hull.

What is claimed is: 
     
         1 . A sailing device to be attached to a hull, the sailing device comprising:
 a sail;   a mast extending in an upward-downward direction of the hull to support the sail;   a boom extending in a plane perpendicular to the upward-downward direction of the hull to support the sail from below; and   a base connected to a lower end portion of the mast and a proximal portion of the boom, and rotatable in the plane perpendicular to the upward-downward direction of the hull.   
     
     
         2 . The sailing device according to  claim 1 , further comprising:
 a base guide having an arcuate or circular shape to guide and support the base when the base rotates in the plane perpendicular to the upward-downward direction of the hull.   
     
     
         3 . The sailing device according to  claim 2 , wherein
 the base guide includes a pair of base guides; and   one of the pair of base guides is located leftward of a central portion of the mast in a right-left direction of the hull, and the other of the pair of base guides is located rightward of the central portion of the mast in the right-left direction of the hull.   
     
     
         4 . The sailing device according to  claim 2 , wherein the base guide is configured to guide and support the base via a base mover movable along the base guide. 
     
     
         5 . The sailing device according to  claim 4 , wherein
 the base guide includes a rail having the arcuate or circular shape; and   the base mover includes a roller movable along the rail.   
     
     
         6 . The sailing device according to  claim 1 , further comprising:
 a boom guide located forward or rearward of the base in a forward-rearward direction of the hull, having an arcuate shape, and connected to a distal end portion of the boom to guide and support the boom when the base rotates in the plane perpendicular to the upward-downward direction of the hull.   
     
     
         7 . The sailing device according to  claim 6 , wherein
 the sail includes a rear sail on a rear side in the forward-rearward direction of the hull;   the boom includes a rear boom to support the rear sail; and   the boom guide is connected to a rear end portion of the rear boom and is rearward of the base in the forward-rearward direction of the hull.   
     
     
         8 . The sailing device according to  claim 6 , wherein the boom guide is configured to guide and support the boom via a boom mover movable along the boom guide. 
     
     
         9 . The sailing device according to  claim 8 , wherein
 the boom guide includes a rail having the arcuate shape; and   the boom mover includes a bearing movable along the rail.   
     
     
         10 . The sailing device according to  claim 1 , wherein the mast has an inverted V shape in which two mast portions approach each other toward an upper end portion of the mast. 
     
     
         11 . The sailing device according to  claim 6 , wherein the boom has an inverted V shape in which two boom portions approach each other toward the distal end portion of the boom. 
     
     
         12 . The sailing device according to  claim 1 , wherein
 the sail includes a front sail on a front side in a forward-rearward direction of the hull, and a rear sail on a rear side in the forward-rearward direction of the hull;   the boom includes a front boom to support the front sail, and a rear boom to support the rear sail;   the front boom includes a rear end portion connected to a front end portion of the base; and   the rear boom includes a front end portion connected to a rear end portion of the base.   
     
     
         13 . The sailing device according to  claim 1 , further comprising:
 an actuator to adjust a rotation angle of the base.   
     
     
         14 . A marine vessel comprising:
 a hull; and   a sailing device attached to the hull; wherein   the sailing device includes:
 a sail; 
 a mast extending in an upward-downward direction of the hull to support the sail; 
 a boom extending in a plane perpendicular to the upward-downward direction of the hull to support the sail from below; and 
 a base connected to a lower end portion of the mast and a proximal portion of the boom, and rotatable in the plane perpendicular to the upward-downward direction of the hull. 
   
     
     
         15 . The marine vessel according to  claim 14 , wherein the sailing device further includes a base guide having an arcuate or circular shape to guide and support the base when the base rotates in the plane perpendicular to the upward-downward direction of the hull. 
     
     
         16 . The marine vessel according to  claim 15 , wherein
 the base guide includes a pair of base guides; and   one of the pair of base guides is located leftward of a central portion of the mast in a right-left direction of the hull, and the other of the pair of base guides is located rightward of the central portion of the mast in the right-left direction of the hull.   
     
     
         17 . The marine vessel according to  claim 15 , wherein the base guide is configured to guide and support the base via a base mover movable along the base guide. 
     
     
         18 . The marine vessel according to  claim 17 , wherein
 the base guide includes a rail having the arcuate or circular shape; and   the base mover includes a roller movable along the rail.   
     
     
         19 . The marine vessel according to  claim 14 , wherein the sailing device further includes, forward or rearward of the base in a forward-rearward direction of the hull, a boom guide having an arcuate shape and connected to a distal end portion of the boom to guide and support the boom when the base rotates in the plane perpendicular to the upward-downward direction of the hull. 
     
     
         20 . The marine vessel according to  claim 19 , wherein
 the sail includes a rear sail on a rear side in the forward-rearward direction of the hull;   the boom includes a rear boom to support the rear sail; and   the boom guide is connected to a rear end portion of the rear boom and is rearward of the base in the forward-rearward direction of the hull.