To reduce the occupied space and the number of mounting holes by supporting the bow and stern areas of a lifeboat by a lifting arm member, and mounting the lifting arm member on the support mechanism body of a passenger boat in a hinged form.

This hanging device is formed of lifting arm members 3a, 3b, and the lifting arm members 3a, 3b are formed in reverse L-shape to support the bow and stern of a lifeboat 2. One-side ends of the first long arm parts 7 of the lifting arm member 3a, 3b are pivotally movable about first axes located in the longitudinal direction of a passenger boat. According to this, the occupied space and the number of mounting holes in a vertical bulkhead part are reduced, and the total weight of the hanging device can be made proper so as to be unrelated to the surface structure of a deck.