The Series 70M Double lens Navigation lights are applicable for all vessels ≥ 20 m in length. Lights marked with anchor may also be used on inland waterways without limitation of ship’s length. The Navigation lights fulfil all requirements of International Regulations for Preventing Collisions at Sea 1972 (COLREG) are published by the International Maritime Organization (IMO) and local rules. Please note, that bulb has to be ordered separately.