1.6 Oil fuel transfer SELF CLOSING COCK Drain cocks must be self- DECK CONTROLLED closing and the outlet valves VALVE should be capable of being closed from safe positions SERVICE TANK outside the engine room In passenger ships, this rain applies also to suction and valve leveling valves on deep tanks1.6 Oil fuel transfer • Drain cocks must be self￾closing and the outlet valves should be capable of being closed from safe positions outside the engine room. • In passenger ships, this applies also to suction and leveling valves on deep tanks. SERVICE TANK H.OIL S T S SELF CLOSING COCK DECK CONTROLLED VALVE Drain valve To engine