One incident, a lot of questions. Security of offshore critical infrastructure in Taiwan waters

The Taiwanese authorities once again had to seek legal instruments on the security breach of the offshore critical infrastructure. This time it is about the damage to the cable connecting Taiwan to Malaysia and the Chinese fishing unit captain.

This case goes far beyond a single criminal investigation and a local maritime incident. The damage to the cable off the coast of Taiwan falls within the global problem of protecting the offshore telecommunications infrastructure, which has become one of the most sensitive elements of modern security systems.

More and more countries treat cables at the seabed as a resource of strategic importance, requiring constant supervision and active protection. In the region of East Asia, marked by geopolitical tensions, the importance of these installations grows even more, making them not only the facilities of civil communication, but also a regional element safety architecture.

Cable damage in Taiwan coastal waters

The event occurred last October when the telecom operator Chunghwa Telecom reported a break in the operation of the submarine cable connecting Taiwan to Malaysia. A few hours later, Taiwan Coast Guard patrol located a Chinese fishing unit operating about 4.2 nautical miles offshore.

The ship captain, a citizen of the People's Republic of China, was detained for questioning. During the fishery, he admitted that the cable had been damaged. Fishing nets have been identified as entangled in the abandoned anchor, resulting in damage to the telecommunications infrastructure at the bottom of the sea.

Experience is not a mitigating circumstance

During the court proceedings, Taiwan's prosecution stressed that the captain was an experienced fisherman and should know the limitations in these waters. The cable route was clearly marked on electronic navigational maps, and the waters themselves were prohibited from dropping anchors.

However, the unit Minlianyu 60138 She was fishing there. The court considered the captain's actions to be gross negligence and sentenced him to three months imprisonment, with the possibility of converting to a fine and the obligation to pay compensation to the cable operator.

Eventually, the captain paid about $2.85 thousand fines and nearly $7.9 thousand as compensation to Chunghwa Telecom. On this basis, the Mainland Affairs Council approved his immediate deportation, which was carried out on 8 January.

Undersea cables as part of critical infrastructure

This incident falls within the broader context of the actions undertaken by Taiwan in recent years. The Taipei authorities openly acknowledge that the protection of telecommunications cables, pipelines and other offshore installations has become one of the priorities of maritime services.

It is not irrelevant that in February 2025 another Chinese captain, this time a merchant ship, was sentenced to three years in prison for intentional damage to the submarine cable. In that case, the court had no doubt as to the intentional nature of the action.

Old ships, foreign flag and gray zone

Taiwanese institutions also point to the growing problem of units belonging to Chinese entities, but registered under so-called cheap flags. Older ships, often of obscure history, are increasingly appearing near the sensitive areas of critical maritime infrastructure.

Therefore, the authorities decided to strengthen control of this water basin, increasing the number of Coast Guard patrols and the range of continuous seagoing vessel traffic surveillance.

More than a local episode

Although the Taiwan-Malaysia cable damage case ended quickly and formally, it is difficult to treat it solely as an isolated incident. In the realities of growing geopolitical rivalry, even seemingly accidental events at sea take on strategic importance.

Undersea telecommunications cables are no longer just part of civil infrastructure. They have become a sensitive state resource whose protection requires the permanent presence of maritime services, clear legal procedures and political determination. Taiwan is sending a clear signal on this, both to its operators and to those who could consider the bottom of the sea as space not supervised.