Additional guidance for the uniform application of Rule 1(e) of the International Regulations for Preventing Collisions at Sea 1972, as amended. IMO circular MSC/Circ.1144 (register)
Adoption of the performance standards for navigation lights, navigation light controllers and associated equipment, annex to IMO Resolution MSC.253(83)
International regulations for preventing collisions at sea 1972, attached to the Prevention of Collisions Convention (COLREGS) (access or purchase)