301-105 HEK H 3 NM 50+ M. The configuration follows the application identified in the product name. Article 186905A. Visibility: 3 NM. Vessel range: for vessels in the 50+ m class. Horizontal mounting. 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.