Melbye 10407361 is a maritime fairway main sign built for coastal and harbour navigation marking. The 1500 x 1500 mm square panel is manufactured from 3 mm anodised, seawater-resistant aluminium and finished with a red/white special vinyl overlay for long-term UV and salt-spray durability. It carries the standard fairway alert symbol and is supplied without mounting hardware for use with existing pole or bracket fixings.