An inflatable bladder assembly which is to be located within the hollow interior of a boat mast, which when inflated, is to be pressed against the wall of the interior chamber of the mast. Normally there are elongated wires or cables which are located within the interior chamber of the mast. With the inflatable bladder assembly inflated, these wires and cables will be tightly pressed against the wall of the interior chamber thereby not capable of movement relative thereto and therefore not capable of producing noise. The inflatable bladder assembly is to be composed of a plurality of separate bladder units mounted in a spaced-apart manner on a pressurized air conducting conduit.
