A ship comprising: a propulsion unit that is configured to exert a propulsion force on a ship hull by power from an engine ; detection means that is configured to detect a current position, a bow direction, and a moving speed of the ship hull; a joystick lever that is configured to change output directions of the propulsion unit so that a course of the ship can be changed; a shift lever that is configured to change magnitude and direction of an output from the propulsion unit ; a lever sensor that is configured to detect a manipulation position of the shift lever ; and a control device that is connected to the engine , the propulsion unit , the detection means , the joystick lever , and the lever sensor , wherein the control device is configured to acquire an operating status of the engine and the propulsion unit and detection results obtained by the detection means , the joystick lever and the lever sensor , and to control the propulsion unit based on the detection results, characterized in that the manipulation position of the shift lever includes at least four positions of a forward traveling position (S, 1, 2, 3), a neutral position (N), a reverse traveling position (R), and a positioning position (P), and the control device performs a dynamic positioning control in a case where the manipulation position of the shift lever detected by the lever sensor is the positioning position (P) such that a propulsion force exerted by the propulsion unit is balanced with an external force such as wind power and tidal power, enabling the ship to be automatically held at a set position and a set azimuth. a propulsion unit that is configured to exert a propulsion force on a ship hull by power from an engine ; detection means that is configured to detect a current position, a bow direction, and a moving speed of the ship hull; a joystick lever that is configured to change output directions of the propulsion unit so that a course of the ship can be changed; a shift lever that is configured to change magnitude and direction of an output from the propulsion unit ; a lever sensor that is configured to detect a manipulation position of the shift lever ; and a control device that is connected to the engine , the propulsion unit , the detection means , the joystick lever , and the lever sensor , wherein the control device is configured to acquire an operating status of the engine and the propulsion unit and detection results obtained by the detection means , the joystick lever and the lever sensor , and to control the propulsion unit based on the detection results, characterized in that the manipulation position of the shift lever includes at least four positions of a forward traveling position (S, 1, 2, 3), a neutral position (N), a reverse traveling position (R), and a positioning position (P), and the control device performs a dynamic positioning control in a case where the manipulation position of the shift lever detected by the lever sensor is the positioning position (P) such that a propulsion force exerted by the propulsion unit is balanced with an external force such as wind power and tidal power, enabling the ship to be automatically held at a set position and a set azimuth. <EOS>