A watercraft lift system including one or more laterally-adjustable components and a related method are disclosed. The watercraft lift system can include a cradle assembly and optionally at least one side guide, which can be connected to the cradle assembly. The cradle assembly can include substantially parallel first and second cradle rails. One or both of the first cradle rail and the at least one side guide can be movable in a lateral direction between a wider watercraft-receiving position and a narrower watercraft-received position. In an example, lateral movement of the first cradle rail and/or the at least one side guide from the watercraft-receiving position to the watercraft-received position occurs automatically upon entry of a watercraft into the confines of the watercraft lift system. The watercraft lift system can further comprise an actuator to cause lateral movement of the first cradle rail and/or the at least one side guide. In an example, the actuator can be operably connected to the first cradle rail and/or the at least one side guide via one or more cables or extension plate members.

A watercraft lift system including one or more laterally-adjustable components and a related method are disclosed. The watercraft lift system can include a cradle assembly and optionally at least one side guide, which can be connected to the cradle assembly. The cradle assembly can include substantially parallel first and second cradle rails. One or both of the first cradle rail and the at least one side guide can be movable in a lateral direction between a wider watercraft-receiving position and a narrower watercraft-received position. In an example, lateral movement of the first cradle rail and/or the at least one side guide from the watercraft-receiving position to the watercraft-received position occurs automatically upon entry of a watercraft into the confines of the watercraft lift system. The watercraft lift system can further comprise an actuator to cause lateral movement of the first cradle rail and/or the at least one side guide. In an example, the actuator can be operably connected to the first cradle rail and/or the at least one side guide via one or more cables or extension plate members.

Provided are two drop tubes and two case tubes with each case tube slidably receiving an associated drop tube. A sub-structure below the two drop tubes is formed of two wheels and two side plates. Each side plate is adapted to couple an associated wheel with an associated case tube. A super-structure above the two drop tubes is formed of two wings. Each wing has a C-shaped configuration. The two wings are positionable in a first orientation parallel with the drop tubes. In the first orientation, the two wings are laterally spaced from a vessel when the drop tubes are horizontal for transporting the vessel. The two wings are positionable in a second orientation perpendicular to the drop tubes. In this second orientation, the two wings form a cradle for supporting the vessel thereupon when the drop tubes are vertical for launching and retrieving the vessel.

Provided are two drop tubes and two case tubes with each case tube slidably receiving an associated drop tube. A sub-structure below the two drop tubes is formed of two wheels and two side plates. Each side plate is adapted to couple an associated wheel with an associated case tube. A super-structure above the two drop tubes is formed of two wings. Each wing has a C-shaped configuration. The two wings are positionable in a first orientation parallel with the drop tubes. In the first orientation, the two wings are laterally spaced from a vessel when the drop tubes are horizontal for transporting the vessel. The two wings are positionable in a second orientation perpendicular to the drop tubes. In this second orientation, the two wings form a cradle for supporting the vessel thereupon when the drop tubes are vertical for launching and retrieving the vessel.

A trailering support device able to load a hull onto a trailer includes one or more controllers configured or programmed to acquire characteristic information indicating a relationship between a steering angle of the hull and a turning radius of the hull; acquire relative position information between the trailer and the hull; detect the steering angle of the hull; predict future movement of the hull based on the acquired characteristic information, the acquired relative position information, and the detected steering angle; generate a predicted trajectory; and provide notification of a positional relationship between the hull and the trailer and provide notification of the generated predicted trajectory.

A trailering support device able to load a hull onto a trailer includes one or more controllers configured or programmed to acquire characteristic information indicating a relationship between a steering angle of the hull and a turning radius of the hull; acquire relative position information between the trailer and the hull; detect the steering angle of the hull; predict future movement of the hull based on the acquired characteristic information, the acquired relative position information, and the detected steering angle; generate a predicted trajectory; and provide notification of a positional relationship between the hull and the trailer and provide notification of the generated predicted trajectory.

A trailering support device able to facilitate loading of a hull onto a trailer includes one or more controllers configured or programmed to perform an automatic vessel steering control to move the hull toward the trailer; estimate, based on a content of the automatic vessel steering control, a position and an azimuth of the hull at a predetermined time after a start of the automatic vessel steering control; detect the position, a steering angle, and the azimuth of the hull; compare the estimated position and azimuth, respectively, with the position and the azimuth detected at the predetermined time; and determine, based on a comparison result, whether the loading of the hull onto the trailer able to be performed; and in a case where it is determined that the loading of the hull onto the trailer is not able to be performed, provide notification of the determination that the loading of the trailer is not able to be performed.

A watercraft bunk assembly includes a lower base that is secured to a support post of a boat lift or other boat supporting structure. A separate upper base is slidably interengaged with the lower base. The upper base is configured to carry a cushion component at an angular inclination for engaging and supporting a boat or other watercraft. Various upper bases having different respective configurations may be interchangeably engaged with the lower base, which enables the bunk assembly to be used for supporting a number of different types of boats and hull configurations.

A watercraft bunk assembly includes a lower base that is secured to a support post of a boat lift or other boat supporting structure. A separate upper base is slidably interengaged with the lower base. The upper base is configured to carry a cushion component at an angular inclination for engaging and supporting a boat or other watercraft. Various upper bases having different respective configurations may be interchangeably engaged with the lower base, which enables the bunk assembly to be used for supporting a number of different types of boats and hull configurations.

A shiplift includes a pier defining a space. The pier includes lifting apparatus. The shiplift includes a shiplift platform configured to fit within the space defined by the pier. One or more movable connectors are mechanically coupled to the shiplift platform. Each movable connector is configured to move into at least two positions, including a first position and a second position. In the first position, the movable connectors are mechanically coupled to the shiplift platform and positioned to allow the shiplift platform to enter the space defined by the pier. In the second position, the movable connectors are mechanically coupled to the shiplift platform and positioned to mechanically couple to the lifting apparatus of the pier.