Chinese mariner Guo Chuan has gone missing in waters off Hawaii, during a solo trans-Pacific sailing attempt.

His support team said they have been unable to contact his vessel after it was found to be slowing down.

Rescuers from Honolulu sent out a search and rescue aircraft which located the trimaran with the mainsail broken off, but couldn't find any trace of Guo.

Chinese mariner Guo Chuan has gone missing in waters off Hawaii, during a solo trans-Pacific sailing attempt.（File photo)

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Chinese sailor Guo Chuan missing in the Pacific Ocean

Guo was last heard just after 15:00 Tuesday Beijing time when his trimaran sailed 900 nautical miles off the west of Hawaii, his team said.

A search aircraft, sent from Honolulu, found the main sail in water, broken off the vessel, but didn't see Guo on the deck. All attempts to contact the sailor have failed, the team said.

Guo set sail on his trimaran near the U.S. city of San Francisco on Oct. 19, embarking on a solo voyage to the Chinese city of Shanghai.