Chinese mariner Guo Chuan sails his trimaran under San Francisco's Golden Gate Bridge, the United States, embarking on a solo trans-Pacific voyage with Shanghai, China, as the destination, Oct. 18, 2016. (Photo/Xinhua)
Rescuers sent by the U.S. Coast Guard didn't see Chinese sailor Guo Chuan on his boat, Guo's shore team said on Thursday.
The Coast Guard used a helicopter to drop rescuers on Guo's trimaran floating on the Pacific Ocean.
Guo was last heard just after 15:00 Tuesday Beijing time when his boat sailed 900 nautical miles off the west of Hawaii. All attempts to contact the sailor had failed.
The 51-year-old Guo was trying to set a solo non-stop trans-Pacific world record from San Francisco to Shanghai.
