At 0218 on 6 March 2011, the UK registered container ship Cosco Hong Kong collided with the China registered fish transportation vessel Zhe Ling Yu Yun 135. The accident occurred in international waters off the coast of Zhejiang Province, China. Zhe Ling Yu Yun 135 sank almost immediately, with the loss of 11 lives. Cosco Hong Kong was not damaged.
On impact, Cosco Hong Kong’s officer of the watch (OOW) felt an unusual vibration
and immediately put the engine telegraph to stop. He did not see Zhe Ling Yu Yun 135 immediately before or after the collision and he was unaware of what the container ship had struck. Cosco Hong Kong remained drifting in the vicinity for over one hour while the master tried to establish what had happened. In the absence of any evidence that a collision had occurred, Cosco Hong Kong then resumed passage to Yangshan, China.
The Taizhou Maritime Rescue Co-ordination Centre was notified that Zhe Ling Yu Yun 135 was missing at 2021, 18 hours after the collision. An air and sea search failed to find any trace of the vessel or her crew. The wreck of Zhe Ling Yu Yun 135 was eventually located
on 17 March 2011 close to the position of the collision.
Factors that led to the collision included: