buoy up, bouy, dan buoy, float, light buoy, anchor buoy, can buoy, seamark, life-buoy, buoy tender, more...

sink, submerge, descend, plummet, go down

marker, navigation, mooring, pilot, drogue, pile, more...

red, first, lighted, large, small, black, white, last, second, green, pin

keep afloat,   floating sign,   stick up at sea,   lobster trap marker,   a float,   floating thing,   big floaters,   nautical warning,   to lift or float,   to keep afloat