Multifunctional mast for dual-fuel dry cargo ship

The invention relates to a multifunctional mast for a dual-fuel dry cargo ship, and relates to the technical field of ship design. The device comprises an outer mast body, a vent pipe, a first pipeline rigid fixing device, a second pipeline rigid fixing device, a pipeline simple support fixing device, a vent cap, a release valve, a first electrical equipment arrangement platform, a second electrical equipment arrangement platform, a maintenance platform and a cable trunk. The main body of the vent pipe 2 is arranged in the mast body, the vent pipe 2 can be protected in all directions, and meanwhile, a small section of the vent pipe 2 outside the mast body is a double-wall pipe, so that leakage of the vent pipe 2 can be found in time by detecting gas in the mast body, and safety accidents are avoided; the mutual action force between the vent pipe 2 and the mast body under the severe sea condition of the ship is reduced, the reliability and the safety of the vent pipe and the mast body are enhanced, all electri