The invention discloses a lifeboat, which relates to the technical field of aquatic lifesaving equipment. The
hull is circular and includes a plurality of depth driving mechanisms, a steering driving mechanism, and the like. The depth driving mechanism is composed of a first bracket, a first
hydraulic cylinder, and a first hydrofoil device, and can adjust the rise and dive of the
hull. The steering driving mechanism includes a retraction device and a second hydrofoil device, which realize up and down retraction through the cooperation of a conical cylinder. The first hydrofoil device and the second hydrofoil device both have a fairing, a hydrofoil, a driving
propeller, and the like. The
hull also includes a fixing ring, an
inflatable wheel mechanism, and a
cockpit. In shallow waters, the steering driving mechanism is retracted, and the
inflatable wheel assists in driving; in deep waters, the steering driving mechanism is lowered, part of the depth driving mechanism works, and the
inflatable wheel assists in floating. The lifeboat has strong flexibility and adaptability, few welded and fixed parts, and is convenient for disassembly and replacement. It can realize the rescue of people who fall into the water on the water surface and improve the movement performance and stability of the lifeboat.