The IB 30 is an information buoy ideal for marking speed, rocks and swimming areas. The IB 30 is white with the option to add a variety of signages and graphics as well as custom paintings. Prior to filling the IB 30 spar buoy with EPS foam beads, 22.7 kg (50 lbs) of concrete is poured into the base interior, for ballast. This buoy utilizes the same materials and manufacturing technologies as offshore navigation buoys and has a white shell for high visibility. IB 30 is available in can or conical shapes and has an option for an internal radar reflector.