xmlns:atom="http://www.w3.org/2005/Atom"
3.1 Internal and External Lights
3.1.1 The lights shall have an operational endurance of not less than 12 hours.
3.1.2 They shall not be damaged in storage and shall operate in a satisfactory manner throughout the air temperature range −30°C to +65°C.
3.1.3 They shall operate in a satisfactory manner throughout a seawater temperature of −1°C to +30°C.
3.1.4 They shall have a shelf life of not less than 3 years.