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Both undersea internet cables to Taiwan's Matsu Islands severed by China-linked vessels

Incident Report

Fact Sheet
Date2 Feb 2023
TrackerChina-Taiwan Tensions
TypeInfrastructure
Location Matsu Islands, Taiwan
26.16, 119.95 (approximate)
What Happened

The two undersea telecom cables linking Taiwan's Matsu Islands to Taiwan proper were severed six days apart, the first on February 2, 2023 by a Chinese fishing vessel and the second on February 8 by an unidentified cargo ship, according to Taiwanese authorities. Matsu's roughly 13,000 residents were left with severely degraded connectivity for about 50 days until a repair ship restored service in late March. Taipei stopped short of calling the cuts deliberate but accelerated backup microwave and satellite links.

Measured Footprint
Series That day Prior 30-day avg Week after vs before
ADIZ aircraft 5 +4% 4.8 -73% (44 → 12)
Aircraft detected 14 +11% 12.6 -42% (90 → 52)
PLAN ships 4 +11% 3.6 -9% (32 → 29)
Daily figures from Taiwan Ministry of National Defense around February 2, 2023; the day's value is compared with the trailing 30-day average. Week comparisons are shown only when the series covers both full weeks.
Matsu Islands, Taiwan
Matsu Islands, Taiwan
Marker placed at region precision.

Activity Around the Incident

PLA aircraft in Taiwan's ADIZ, two weeks either side
January 19, 2023 — 12 aircraft Jan 19 January 20, 2023 — 1 aircraft January 21, 2023 — 0 aircraft January 22, 2023 — 0 aircraft January 23, 2023 — 0 aircraft Jan 23 January 24, 2023 — 0 aircraft January 25, 2023 — 1 aircraft January 26, 2023 — 2 aircraft January 27, 2023 — 0 aircraft Jan 27 January 28, 2023 — 1 aircraft January 29, 2023 — 2 aircraft January 30, 2023 — 2 aircraft January 31, 2023 — 20 aircraft Jan 31 February 1, 2023 — 17 aircraft February 2, 2023 — 5 aircraft (incident day) 5 Feb 2 February 3, 2023 — 2 aircraft February 4, 2023 — 2 aircraft Feb 4 February 5, 2023 — 0 aircraft February 6, 2023 — 0 aircraft February 7, 2023 — 1 aircraft February 8, 2023 — 2 aircraft Feb 8 February 9, 2023 — 0 aircraft February 10, 2023 — 0 aircraft February 11, 2023 — 0 aircraft February 12, 2023 — 11 aircraft Feb 12 February 13, 2023 — 1 aircraft February 14, 2023 — 0 aircraft February 15, 2023 — 3 aircraft February 16, 2023 — 1 aircraft Feb 16
Daily counts from Taiwan Ministry of National Defense; the highlighted bar is the incident day, February 2, 2023.

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