On 1 October 2012 , at approximately 20:23 HKT , the passenger ferries `` Sea Smooth '' and `` Lamma IV '' collided Motion off Yung Shue Wan , Lamma Island , Hong Kong .

On 14 February 2015 , `` Sea Smooth '' ′s captain Lai Sai-ming was convicted of 39 counts of manslaughter over the deaths , while `` Lamma IV '' ′s captain Chow Chi-wai was acquitted Judgment_communication of the same charges by the High Court .