A tiller arm for outboard motors includes a first portion adapted to be coupled to the outboard motor and a second portion adapted to be coupled to a command terminal. The first and the second portions of the tiller arm are telescopically engageable to one another, and a blocking system between the first and second portions is configured to block a mutual sliding at predetermined positions.

A bicycle and board apparatus comprising a buoyant board, a front wheel, a rear wheel and a steering member, and being mountable and usable in a first configuration as a bicycle in which the buoyant board is the bicycle's frame and in a second configuration as a surfboard by changing the orientation of the front wheel, the rear wheel or the steering member with respect to the buoyant board.

A flexible steering fin and passive cambering keel for sailboats having fundamental simplicity yet enhanced performance and superior operation in terms of design and components. The steering fin is a relatively short and elongated flexible blade with its leading edge fixed beneath the hull. A rod passing through the hull functions as a simple lever controlling the trailing edge of the blade, which provides both tilt and curvature for unique handling and ease of use. A separate flexible keel provides the function of tilting the keel as it is cambered, for greater lift. A unique fundamental mastless wingsail is also disclosed having minimal components and simplicity of operation. A mastless wingsail is also disclosed which utilizes a tensioned rod to replace known sail supports.

A vehicle control system comprising a first set of handlebar grips including a first grip mounted on a first side of the vehicle and a second grip mounted on a second side of the vehicle and a second set of handlebar grips mounted on the vehicle including a third grip mounted on the first side of the vehicle and a fourth grip mounted on the second side of the vehicle, the first and third grips being mounted in at least one position thereof in parallel, coplanar relation and the second and fourth grips being mounted in at least one position thereof in parallel, coplanar relation. In a specific embodiment, the invention further includes a first set of controls mounted on the first set of handlebars and a second set of controls mounted on the second set of handlebars. The first set of controls may be identical to the second set of controls. The second set of controls is coupled to or through the first set of handlebar controls. In a preferred embodiment, an adjustment mechanism is included with a drive motor for changing a mounting angle of the second set of handlebars relative to the first set of handlebars and a second drive motor for changing a mounting distance of the second set of handlebars relative to the first set of handlebars.

In an upper mount portion, a steering central axis related to a steering force of a steering handle and a vibration central axis related to a torque reaction force of an engine are configured to be shifted back and forth. A mount member is formed such that a spring constant related to the vibration central axis is smaller than a spring constant related to the steering central axis.

A marine propulsion device includes a power source, a steering handle, and an accelerator grip that moves with respect to the steering handle. A movement region of the accelerator grip includes a forward movement rotation region, a reverse movement rotation region and an axis movement region. In the forward movement rotation region, the accelerator grip is operated to rotate so as to obtain a drive force in a forward movement direction. In the reverse movement rotation region the accelerator grip is operated to rotate so as to obtain a drive force in a reverse movement direction. The axis movement region is provided between the forward movement rotation region and the reverse movement rotation region. In the axis movement region, the accelerator grip is moved in the extensional direction of a rotation axis.

A flexible steering fin and passive cambering keel for sailboats having fundamental simplicity yet enhanced performance and superior operation in terms of design and components. The steering fin is a relatively short and elongated flexible blade with its leading edge fixed beneath the hull. A rod passing through the hull functions as a simple lever controlling the trailing edge of the blade, which provides both tilt and curvature for unique handling and ease of use. A separate flexible keel provides the function of tilting the keel as it is cambered, for greater lift. A unique pivoting resilient steering assembly is incorporated, along with a rotational circular hull section, frame and cam assembly to control the keel.

A watercraft is provided with a watercraft body and a storage container. The watercraft body includes a hull and a deck. The deck is provided on the hull. The storage container is attached to the watercraft body. The storage container includes an access opening and an annular sidewall. The access opening opens upward relative to the deck. The annular sidewall has an upper end, a lower end and an interior storage space between the upper end and the lower end. The lower end of the annular sidewall defines a bottom opening with a cross sectional area that is larger than a cross sectional area of the upper end of the annular sidewall.

A small planing watercraft includes: a body; a seat located above the body; a steering handle located above the body and forward of the seat; and an additional part holding mount secured to the handle and disposed forward of a rear surface of the handle.

A personal watercraft, driving control system, and method for controlling the watercraft. The watercraft includes a jet powered propulsion system; a steering system including a handle; and the driving control system including an electrically actuated device coupled to the steering system for applying torque to the steering system; at least one sensor positioned adjacent the steering system; and a controller. The controller is configured to: determine whether user torque is being applied to the steering system; and responsive to determining that the user torque is not being applied: determine a steering angle; determine a target angle for returning the steering system to a center position; compare the steering angle to the target angle; determine a centering torque; and operate the electrically actuated device to apply the centering torque to the steering, with the centering torque being applied only by the electrically actuated device.