solar LED flashing light can be installed on ships,boats,barges, ... visibility:2km-5.5km 2)Turn on at dust and turn off at dawn automatically. 3)Completely self ... containt,no cables,no people management. 4)Waterproof and shock resistant 5)Nearly recharge themselves at nearly all ... BOATS,BARGES,YACHT,TOWAGE,WARSHIP,DREDGER,INLAND BOAT2)OIL AND GAS OFFSHORE PLATFORM MARKING 3)PORT LIGHTING 4)MARINA ...