Ocean ship coating device and method

The invention relates to the technical field of ship coating, and discloses a marine ship coating device and method.The marine ship coating device comprises a moving box, a mechanical arm is connected to the end wall of the moving box through a rotating mechanism, a coating mechanism is arranged at the tail end of the lower side of the mechanical arm, and the coating mechanism comprises a connecting disc fixedly connected to the tail end of the lower side of the mechanical arm; the underwater part of the ship can be coated, the underwater position of the ship can be better coated and maintained, the service life of the ship is prolonged, and different underwater positions of the ship can be coated; according to the ship surface adhesion removing mechanism, through movement of the mechanism, adhesion objects on the surface of a ship can be removed before coating, coating is facilitated, and the removed adhesion objects can be collected; and the coating position can be dried, the position before coating and the