INDO-PACIFIC STUDIES CENTERStrategic Intelligence Unit | Client Digest
Maritime Domain | 12-Month Signal Review | 8 July 2025 – 7 July 2026
IPSC Maritime Pressure Report
Twelve months of geolocated open-source maritime signals — PLA operations, coast-guard grey-zone activity, allied presence and crisis-management events — distilled into one evidence-first read of how pressure in the Indo-Pacific is moving, and where it is heading next.
Free download. Strategic risk analysis based on open sources; not legal, financial or investment advice.
247
located maritime signals
59%
in Taiwan-adjacent waters
124
PLA activity signals
36
grey-zone signals
56
allied / partner signals
BOTTOM LINE UP FRONT
Maritime pressure around Taiwan is compressing, not dispersing. Activity is concentrating onto fewer, busier waters — a new coast-guard enforcement front is open on Taiwan’s eastern approaches, and four categories of actor now operate on the same sea space. On current trajectory, the binding risk is not a deliberate escalation decision but an interaction incident in crowded water.
Inside the report
- Five key judgements — the concentration onto Taiwan, the new eastern-approaches front, the migrating grey-zone arc, pulsed far-seas deployments, and the allied mirror.
- Four charts — monthly pressure by actor, feature-level intensity, quarterly spatial composition, and the grey-zone arc timeline.
- Feature readout — seven named sea areas with signal counts, intensity and a one-line analytical reading each.
- Six watchpoints for the next two quarters — including the single most diagnostic indicator on the maritime board.
- Method annex — how signals are collected, validated, scored and geolocated, with honest caveats.
What the data shows
The Strait-core share of activity rose from ~45% to 58% across the year, even as absolute tempo peaked — intensification meant concentration, not dispersion.
All 36 grey-zone signals sit on one arc around Taiwan — none in the South China Sea — and the arc migrated from Kinmen to Pratas and the east coast.
The waters east of Taiwan produced zero standalone signals for eleven months — then eleven in June, drawing a four-power démarche.
Page one of the report: BLUF, executive summary and headline indicators.
How this report is built. IPSC signals are discrete, source-verifiable events collected from official releases, major media, think-tank and data-series reporting, validated against a fixed rubric, scored with a published method, and geolocated to named sea areas. Positions are regional attributions, not fixes; every judgement traces to named signals in the IPSC master dataset. A structured-signal aggregation is a prompt to investigate, not a forecast.