Yesterday, authorities rescued three of 30 crew members as strong winds and rain battered the coast and waters about 300km southwest of the city, Hong Kong Government Flying Service said.

The site of the incident was surrounded by about 100 wind turbines that, compounded with gusts reaching up to 140kph, had hampered rescue efforts.

The search area had been widened but the chance of finding survivors was “very slim”, West Wu, controller of the Government Flying Service of Hong Kong, said today.

Hong Kong sent nine aircraft to jointly conduct search and rescue operations with forces from the mainland.

Some of the crew had likely abandoned the vessel as it snapped in two, the surviving crew members told authorities.

Chaba skirted the global financial hub, bringing heavy rain and winds on Friday and yesterday, restricting public transport and forcing many businesses to close.

Authorities in Hong Kong raised the typhoon warning on Thursday just as Chinese president Xi Jinping arrived in the city to commemorate the 25th anniversary of its handover from Britain to China.