HANOI—A Chinese oil survey vessel that has been embroiled in a tense standoff with Vietnamese vessels in the South China Sea left Vietnamese-controlled waters on Oct. 24 after more than three months, marine data showed.
The Chinese vessel, the Haiyang Dizhi 8, was speeding away from Vietnam’s exclusive economic zone towards China on Thursday under the escort of at least two Chinese ships, according to data from Marine Traffic, a website that tracks vessels.
