The single-deck boat carrying 13 passengers and two crew members was travelling from Cheung Chau to Shek Kwu Chau when the incident happened.
High waves and a strong current were blamed when a 15-metre ferry travelling between two Hong Kong islands sank on Wednesday afternoon.
The single-deck boat carrying 13 passengers and two crew members was travelling from Cheung Chau to Shek Kwu Chau when the incident happened.
The South China Morning Post reported a police spokesman as saying a ferry came from Shek Kwu Chau to pick up 11 of those on board before the vessel sank. The remaining four were forced to jump into the sea.
Three people were retrieved from the water and a fireboat picked up a fourth man.
Police said no one was injured or needed hospital treatment and there were no suspicious circumstances linked to the sinking.