The utility model relates to an ocean engineering technique of equipping discloses a shipyard floats. This shipyard floats and operating type can at sea carry out the whole maintenance or build many naval vessels. This shipyard floats adopts a flat floating structure to the basin that open breach formed sets up many hoisting points to unite hoisting device in basin both sides, and hoisting deviceis furnished with the formula of revealing all the details hoist, can realize promoting out water to upper deck fast or falling the operation of entrying the naval vessel is whole, and the distributing type jointly promotes can eliminate the whole destructive load to the hull of lifting by crane. Lay at the on -board and move the movable rail way and lift by crane equipment, can make the upper deck possess the function of similar land building berth. Shipyard floats is the sea area externally, realizes going on wholly going out the maintenance of water or building to many naval vessels.