Beijing: Chinese sailor Guo Chuan has gone missing while trying to break the record for crossing the Pacific alone, authorities said on Thursday.
Guo was last heard just after Tuesday afternoon when his boat, the Qingdao China, sailed 900 nautical miles off the west of Hawaii, Xinhua news agency reported.
All attempts to contact the 51-year-old sailor has failed, the authorities added.
The US Coast Guard was now searching waters off Hawaii, where his boat was spotted without him onboard its main sail snapped off and in the water.
Guo left San Francisco on October 18 with the aim of reaching Shanghai within 20 days.
He was also the first Chinese person to sail around the world alone when he completed his trans-navigation of the globe in a 12m yacht in 2013.