MARINE ACCESSORIES, NAMELY, NYLON BLOCKS CLAMPED AROUND HORIZONTAL OR VERTICAL TUBINGS ON A BOAT OR SHIP TO WHICH HOLDERS AND HANGERS ARE ATTACHED FOR THE PURPOSE OF HOLDING, SUPPORTING OR MOORING ROPES-SHEET, FLAGS, ANCHORS, ANTENNAS, LANTERNS, STEPPING PLATES, WIND SURFING BOARDS, LIFE BUOYS, BOTTLES, CUPS, AUXILIARY OUTBOARD ENGINES AND EQUIPMENT IN THE MAST TOP