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Japan spots Chinese survey ship operating in disputed waters

By Thomson Reuters Mar 30, 2026 | 7:27 PM

TOKYO, March 31 (Reuters) – Japan’s Coast Guard said it had confirmed a Chinese marine research vessel was ​operating in its exclusive economic ‌zone (EEZ) west-northwest of Uotsuri Island on Monday and had demanded that the activity be halted.

The island is part of a chain of ‌islands ​claimed by both countries. ⁠China and Japan ⁠have faced off in the waters around the islands, which Japan calls the Senkaku Islands and China calls Diaoyu, ​deploying patrol boats and urging the other to leave the area.

The ⁠Chinese oceanographic survey ship ⁠Xiang Yang Hong 22 was ​spotted around 1:30 p.m. (0430 GMT), about 37 ​nautical miles (69 km) from Uotsuri Island, ‌and was seen extending pipe-like equipment from both sides of the ship and wire-like equipment from its stern into ⁠the sea, the coast guard said.

Japan’s patrol vessel issued a radio warning to the Chinese ⁠ship that ‌marine scientific research conducted ⁠without Japan’s consent was not ​permissible. The ‌coast guard continues to monitor ​the vessel ⁠and repeat its demand for the activity to be stopped, it said in a statement late on Monday.

(Reporting by Chang-Ran Kim; Editing by Jamie Freed and ​Himani Sarkar)