Sea-Dog Black LED Comination Bow Light - Injection Molded ABS - 1nmBlack LED Comination Bow Light Injection Molded ABS 1nm Black LED Combination Bow Light (400058) is approved for USCG 1 NM (Colreg 1 mile) and is constructed of injection molded ABS with a Zamak base. Installs with two #8 RH fasteners (not included). IP67 waterproof rating. All USCG approved navigation lights must be mounted properly to provide the correct visual alignment and allow unimpeded sight lines. Please refer to USCG regulations for 1 NM and