A Vietnamese cargo boat that vanished near the Philippines on Christmas Day has sunk, killing 22 of its 23 crew members, Vietnam state shipping firm Vinalines said Friday. \"According to our initial information, only one sailor has been rescued and the vessel has not been found yet,\" a Vinalines official based in Hanoi told AFP, asking not to be named. The Vinalines Queen, which had a cargo of nickel, disappeared after passing Luzon island and apparently did not send out a distress signal.