This 3 nm 135° red suez stop light, cd/cs alu base, black provides a purpose-specific solution for onboard use. Reference article: 186941AZ. Visibility: 3 NM. Material: aluminum. Lopolight LED navigation light with IP68 protection and 10–32 VDC supply, intended for marine navigation in accordance with COLREG72. The standard housing uses anodized aluminum with a PMMA lens and A4 stainless-steel fasteners.