A boat crane is a type of crane that is specifically designed to be mounted on a boat or ship. It is used for lifting heavy loads on and off the vessel, such as cargo, equipment, or even other boats. Boat cranes come in different sizes and lifting capacities, depending on the size of the vessel and the loads that need to be lifted. They can be operated by a crew member or remotely, and are typically powered by hydraulic, electric, or diesel engines.

Boat cranes are commonly used in commercial fishing, shipping, and offshore industries, where they play a crucial role in loading and unloading cargo, as well as in the installation and maintenance of offshore structures. They are also used in recreational boating, where they can be used to lift boats in and out of the water for maintenance, storage, or transportation. Overall, boat cranes are an important piece of equipment for any vessel that needs to handle heavy loads safely and efficiently.