A Vietnam-registered cargo vessel sank in about 380 nautical miles east of Vung Tau, Vietnam, local officials said.At about 4 p.m. on Sunday, the Maritime Rescue Coordination Centre (MRCC) Singapore operated by the Maritime and Port Authority of Singapore (MPA), received a distress alert from the general cargo vessel Hung Phat 89 (HP89) within the Singapore Maritime Search and Rescue Region.