Taiwan flags massive PLA naval mobilisation, spike in air sorties

Taiwan reported a broad Chinese military deployment at sea and in the air. More than 100 PLA naval vessels and mainland Chinese coastguard ships sailed across the western Pacific. At the same time, Taiwan detected 49 PLA aircraft sorties in the 24 hours to 6am Tuesday. That was the highest daily total recorded this year.

The ships operated across the East and South China seas, around Taiwan, and in the Philippine Sea. The Liaoning aircraft carrier strike group led drills in the Philippine Sea. Taiwan’s ministry also counted six PLA Navy warships and six official ships near the island during the same reporting period.

The figures changed quickly. Aircraft sorties fell to 22 by Wednesday morning. Nearby ships then numbered seven PLA Navy vessels and five official ships. The wider vessel total covered a much larger area than Taiwan’s local monitoring zone, so the two counts measure different things.

The People’s Liberation Army, or PLA, is China’s military, including its air and naval forces. The article refers to PLA aircraft, PLA Navy warships, and different PLA theatre commands. These forces are organised for operations across areas such as the East China Sea, South China Sea, and western Pacific.

A naval vessel is a ship used by a navy. In this report, vessels include aircraft carriers, guided-missile destroyers, and other ships. The article also separately counts official ships, such as coastguard vessels. A sortie is one military aircraft’s operational flight or mission. Thus, 49 sorties means Taiwan detected 49 aircraft flight operations, not necessarily 49 different aircraft.

These categories explain why the figures should not be added together as one total. Ships are counted by vessel, while aircraft activity is counted by sorties. The article reports both to show the deployment’s maritime scale and its simultaneous air activity.

The deployment covered a vast maritime area. A map released by Joseph Wu showed Chinese vessels in the East China and South China seas, waters surrounding Taiwan, and the Philippine Sea. The Liaoning carrier strike group operated in the Philippine Sea, joined by assets from the PLA’s Eastern, Northern, and Southern Theatre commands.

The location matters because the Philippine Sea is farther from Taiwan and connects the island’s surrounding waters with the wider western Pacific. The Liaoning’s drills overlapped with the US-Japan Keen Sword exercise. During that exercise, USS Theodore Roosevelt operated with warships from Japan, Australia, Canada, and France. The Liaoning had also been tracked near the southern Philippines.

This creates a wider regional security picture rather than a solely local one. Taiwan remained vigilant while reporting only a smaller number of vessels immediately nearby. The activity showed Chinese forces operating across multiple seas while allied forces were also exercising in the Philippine Sea.

The two figures used different geographic boundaries. Joseph Wu’s map showed more than 100 PLA naval vessels and mainland Chinese coastguard ships across the East China and South China seas, waters around Taiwan, and the Philippine Sea. This was a theatre-wide picture of maritime activity across the western Pacific.

Taiwan’s defence ministry used a narrower counting method. It counted only assets detected within the island’s immediate surrounding air and sea zones. In the 24 hours to 6am Tuesday, it reported six PLA Navy warships and six official ships. By Wednesday morning, the figures were seven PLA Navy vessels and five official ships.

Therefore, the numbers do not conflict. The larger figure includes ships operating far from Taiwan, including the Liaoning group in the Philippine Sea. The smaller figure identifies vessels close enough to fall within Taiwan’s local monitoring area. Geography and counting rules account for the difference.

Large military movements can make Taiwan’s security environment more tense. More aircraft near the island require closer monitoring, while naval groups operating across nearby seas widen the area Taiwan must watch. Frequent or large deployments can also increase uncertainty about China’s intentions and place greater pressure on Taiwan’s defence forces.

The article gives a clear example. Taiwan detected 49 PLA aircraft sorties in one day, alongside a wider deployment of more than 100 Chinese naval and coastguard vessels. Joseph Wu said Taiwan would stay vigilant, would not provoke, and would not bow to pressure. The Liaoning group also operated during a US-Japan-led multinational exercise.

The immediate figures later eased. Aircraft sorties fell to 22 by Wednesday morning, and Taiwan reported roughly a dozen nearby Chinese vessels. Still, the broad maritime activity and overlapping exercises keep regional attention focused on possible miscalculation, military pressure, and the responses of Taiwan and other countries.

Taiwan’s 49 detected aircraft sorties marked the highest single-day total of that year. However, the figure remained below earlier major PLA exercise surges near the island. This comparison puts the latest activity in perspective: it was unusually intense for the year, but not the largest air operation Taiwan has recorded.

In late December of the previous year, daily totals reached 77 sorties on December 31, after 130 sorties the day before. The record is higher still. The Joint Sword-2024B drills in October 2024 produced 153 sorties in one day, the single-day record cited in the article.

The latest activity also included more than 100 vessels across the western Pacific, so aircraft numbers tell only part of the story. Sorties dropped to 22 by Wednesday morning, but the maritime deployment remained broad. The comparison suggests that future exercises could again produce larger or wider operations.

Taiwan is a major security issue because Beijing views the island as part of China and says it could reunify it by force if necessary. Taiwan is self-ruled, while most countries, including the United States and Japan, do not recognise it as an independent state. This creates a sharp political and military divide.

The article shows how that divide affects regional forces. Chinese aircraft and vessels operated around Taiwan and across the western Pacific. At the same time, the US-Japan Keen Sword exercise involved USS Theodore Roosevelt and allied warships from Japan, Australia, Canada, and France. The Liaoning’s drills overlapped with that exercise in the Philippine Sea.

Washington opposes any attempt to take Taiwan by force and is committed to supplying the island with weapons. China’s deployments therefore concern Taiwan directly and also affect the United States, Japan, and other countries operating nearby. Continued activity could keep regional security tensions high.