The swivel enables an offloading tanker to rotate with respect to the mooring buoy. There is room for several boats at anchor or at a mooring buoy. "Tiger" lingered on, tied to a mooring buoy in Portsmouth harbour. It can be placed on a boat or on a surface marker buoy. Two flowlines connect the facility to a floating loading buoy. Each end has a float line with a buoy attached. The risers are flexible hoses that connect the subsea piping to the buoy. Large waves partially defaced the iconic Southernmost point buoy. Several types of marker buoy may be used by divers. The wave was measured by a weather buoy near the island. In these locations, lifebuoys have been superseded by devices such as the torpedo buoy. An indicator buoy was released and smoke candle fired. Lobsters are caught using baited one-way traps with a color-coded marker buoy to mark cages. The convict hides on a buoy and the police tow Finn back to land. MODIS has used the marine optical buoy for vicarious calibration.