At-sea air blower integral transportation and installation method and special engineering ship

The invention relates to an at-sea air blower integral transportation and installation method and a special engineering ship; the method comprises the following steps: 1) a skirting block is additionally arranged on an air blower stepped tower; 2) a sliding fork grafting device or a mechanical arm is arranged on an engineering ship, when the air blower is fork-grafted, a fork head is connected with the skirting block and is locked with the skirting block by a bolt; 3) the air blower is transferred to the ship by supporting of the fork head and is fixed, and then the fork head is removed; 4) the ship carried with the air blower closes to an at-sea installation base, the ship body is jacked out of the water plane to the proper position, the fork grafting device or the mechanical arm is operated to fork-graft the air blower, and the connection between the air blower and the base is removed, and the air blower is integrally translated to the installation base by the lifting action of the fork head; the special engineering ship which adopts the method at least comprises a flat ship body, the sliding fork grafting device or the mechanical arm is arranged on an engineering ship, the end of the fork grafting device is provided with the fork head, and the size of the fork head is matched with the size of the stepped drum; in the invention, the problem of hoisting is not considered, therefore, the invention has great significance to the development and construction of large-scale at-sea wind power stations.