While searching for 16 missing seamen, a fire services diver was rescued instead. The diver got entangled with debris in the sunken Ukrainian tugboat. Fire officers said the diver's breathing tube became entangled with floating debris in the hull of the vessel.
The diver needed to stay underwater past the safety limit after he was untangled because he had to decompress for 50 minutes.
The incident pressed the dangers on the seabed where the 80-meter Neftegaz-67 sank after a collision with a Chinese cargo ship last Saturday off Lantau Island.
After a full recovery, the diver continued the search for the victims.