Taiwan investigating Chinese-crewed ship believed to have severed undersea cable

Taiwan detained the Chinese-crewed cargo ship Hongtai on February 25 after a subsea telecoms cable was severed off the island, the coast guard said.
| Photo Credit: AFP

Taiwanese authorities are investigating a Chinese-crewed ship suspected of severing an undersea communications cable in the latest such incident adding to tensions between Taipei and Beijing.

Taiwan’s coast guard intercepted the Togolese-flagged cargo ship Hongtai in waters between its main island’s west coast and the outlying Penghu Islands early Tuesday (February 25, 2025), according to a statement by the coast guard.

The coast guard had earlier been notified by telecommunications provider Chunghwa Telecom that one of its undersea cables had been severed 6 nautical miles (11 kilometres) northwest of Jiangjun Fishing Harbor.

The Hongtai had been anchored in that same area since Saturday evening, the coast guard said. From Saturday until early Tuesday, authorities in the nearby Anping Port in Tainan had sent signals to the vessel seven times but had received no response. After the Chunghwa Telecom cable damage report, the coast guard approached the ship, which had begun to sail northwestward, and escorted it to Anping Port.

Sabotage or accident?

Taiwanese authorities said the ship’s entire eight-person crew were Chinese nationals and the case was being handled “in accordance with national security-level principles.”

“The cause of the underwater cable break, whether it was due to intentional sabotage or simply an accident, is still pending further investigation for clarification,” the coast guard said.

“The possibility of this being part of a gray-zone incursion by China cannot be ruled out,” it added.

Backup cable activated

Communications on the Penghu Islands were not disrupted because Chunghwa Telecom had successfully activated a backup cable, the coast guard said.

This is the latest in a series of incidents in recent years in which undersea Taiwanese cables have been damaged — with Taipei in some instances blaming China. Earlier this year, a Chinese cargo ship was suspected of severing a link northeast of the island.

In February 2023, two undersea cables serving Taiwan’s Matsu Islands were severed, disrupting communications for weeks.

Taipei fears China might damage its underwater communications cables as part of attempts to blockade or seize the island, which Beijing claims as its own.

A Chinese Foreign Ministry spokesperson said during a regular press briefing on Tuesday that he was not aware of the issue and it did not pertain to diplomacy.