Abstract: A factory barge for manufacturing reinforced concrete products comprises a batcher plant mounted at one end of the hull for preparing ready mixed concrete, a reinforced concrete product unloader mounted at the opposite end of the hull, and, between the batcher plant and the unloader, in the order mentioned, concrete placers for receiving the concrete from the batcher plant and placing it into elongated molds held in the fore-and-aft direction, compactors for compacting the concrete in the molds, a curer for curing the concrete compacted in the molds, and a mold remover for removing the molds from the cured concrete products. An equipment for fabricating reinforcement cylinders is mounted on a deck above the deck where the concrete placers are installed, and means for transferring the molds from the concrete placers to the compactors, curer, and mold remover is so disposed as to handle the molds while maintaining them in the fore-and-aft direction.