A system for maneuvering a boat including a hull and an outboard motor attached to the hull, the system comprising: a first bracket configured to be attached to the hull; a second bracket including a left tilt shaft, a right tilt shaft, and a steering shaft support, the second bracket being configured to support the outboard motor at the steering shaft support, the second bracket being rotatably supported with respect to the first bracket at the left tilt shaft and the right tilt shaft; a hydraulic cylinder at least a part of which is disposed between the left tilt shaft and the right tilt shaft, the hydraulic cylinder being configured to exert a steering force to the outboard motor to rotate the outboard motor about the steering shaft support and including a cylinder tube, a piston arranged in the cylinder tube, and a rod connected to the piston, wherein the piston partitions the space in the cylinder tube into a left chamber and a right chamber; a hydraulic pump configured to supply hydraulic fluid to the hydraulic cylinder; one of the left tilt shaft and the right tilt shaft including a first hole, characterized in that the rod is supported by the second bracket such that, when hydraulic fluid is supplied to the left chamber, and hydraulic fluid is discharged from the right chamber, the cylinder tube moves leftward to rotate the outboard motor about the steering shaft support, and when hydraulic fluid is supplied to the right chamber, and hydraulic fluid is discharged from the left chamber, the cylinder tube moves rightward to rotate the outboard motor about the steering shaft support, and when the cylinder tube moves leftward or rightward, a portion of a stroke range of the cylinder tube being located within the first hole. a first bracket configured to be attached to the hull; a second bracket including a left tilt shaft, a right tilt shaft, and a steering shaft support, the second bracket being configured to support the outboard motor at the steering shaft support, the second bracket being rotatably supported with respect to the first bracket at the left tilt shaft and the right tilt shaft; a hydraulic cylinder at least a part of which is disposed between the left tilt shaft and the right tilt shaft, the hydraulic cylinder being configured to exert a steering force to the outboard motor to rotate the outboard motor about the steering shaft support and including a cylinder tube, a piston arranged in the cylinder tube, and a rod connected to the piston, wherein the piston partitions the space in the cylinder tube into a left chamber and a right chamber; a hydraulic pump configured to supply hydraulic fluid to the hydraulic cylinder; one of the left tilt shaft and the right tilt shaft including a first hole, characterized in that the rod is supported by the second bracket such that, when hydraulic fluid is supplied to the left chamber, and hydraulic fluid is discharged from the right chamber, the cylinder tube moves leftward to rotate the outboard motor about the steering shaft support, and when hydraulic fluid is supplied to the right chamber, and hydraulic fluid is discharged from the left chamber, the cylinder tube moves rightward to rotate the outboard motor about the steering shaft support, and when the cylinder tube moves leftward or rightward, a portion of a stroke range of the cylinder tube being located within the first hole.