This undated file photo shows the missing boat in Kota Kinabalu, in the state of Sabah, Malaysia. A boat carrying 31 people, among them more than 20 tourists from China, has lost contact with the authorities since it sailed out from Kota Kinabalu (KK) in the eastern Malaysian state of Sabah on Saturday, the Consulate General of China in KK said on Sunday. (Xinhua)