The “SZ4400” signaling buoy is a signaling buoy with a height varying from 3 to 3.5 meters. yellow, radarable and with the possibility of having a lantern with a range of 1 to 5 nautical miles. Our buoys are built with our own molds and filled with PU or EPS. The SZ4400 has a galvanized iron frame and is composed of two separate conical bodies. The topmark is a S. Andrea cross in metal to make the signal radarable.