Taiwan reports China-linked ship damaged key submarine cable

Taiwan reports China-linked ship damaged key submarine cable is profiled by BTW Media because published evidence links it to internet infrastructure, governance, operational dependencies, or market visibility.

• Taiwan accuses a China-linked ship of damaging a submarine cable off Keelung.
• The incident sparks concerns about “gray zone warfare” and heightens regional tensions.

What happened: Taiwan accuses China-linked ship of damaging submarine cable.

Taiwanese authorities have reported that the vessel Shunxing 39, allegedly linked to China, damaged a submarine cable operated by Chungwa Telecom while leaving the port of Keelung last Friday.

The ship was heading towards South Korea when it reportedly severed the cable, disrupting some of its fibres. However, Chungwa Telecom confirmed that only four fibres were affected and its redundancy systems ensured that no major service disruptions occurred.

Taiwanese security experts believe the incident was deliberate, suggesting the ship’s true owner might be a Chinese national, a theory supported by unnamed sources within Taiwan’s coast guard. Although many reports claim the vessel is registered in Cameroon, shipping databases list it as Tanzanian. Furthermore, evidence of ownership by a Chinese national is not immediately apparent.

Local authorities attempted to communicate with the ship, but heavy seas prevented any interception. Taiwan is now seeking assistance from South Korean authorities once the ship arrives in their waters.

Also read: Undersea cables and global tensions: A geopolitical tug-of-war
Also read: China urges vigilance against Taiwanese cyberattacks

Why this is important

This incident further intensifying concerns over gray zone warfare—a strategy in which acts of sabotage are deliberately carried out in ways that are difficult to trace or deny. Submarine cables, crucial for global communications, are increasingly vulnerable to such covert tactics. While damaging these cables can lead to significant economic and security consequences, pinpointing the perpetrators is notoriously challenging, making them a prime target for state actors looking to undermine rivals without resorting to open conflict. As the threat to these vital undersea networks grows, so too does the risk to international stability and cybersecurity.

The incident also escalates tensions between Taiwan and China, with Beijing viewing Taiwan as a breakaway province. Taiwan’s importance is further emphasised by its role as the home of TSMC, the world’s leading semiconductor manufacturer. Any disruption to Taiwan’s communications infrastructure could have far-reaching consequences, especially for industries reliant on Taiwanese semiconductor technology. This event underscores the growing risks to critical global infrastructure and highlights the ongoing geopolitical tensions in the Taiwan Strait.