A Japan-China encounter at sea or in the air ends in a collision, gunfire or injury
The test Between 26 Oct 2026 and 31 Oct 2027, a Japanese and a Chinese government ship or military aircraft collide, either side fires a weapon at the other's ship or aircraft, or a crew member of either side is injured in an encounter between them (shadowing, radar lock-on and water cannon alone do not count).
Not under way · Confidence: medium · Reviewed 25 Oct 2026 · Scores from 1 to 10
This page answers: What could happen, how it is scored, and who is exposed?
Using this page
- Read the two scores: Likelihood and Impact are kept apart.
- Check what is happening, each fact with its source.
- Use the calendar for the dates to watch.
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Impact is the average of the four parts, rounded, plus one point when Canada is directly hit on two or more channels, up to 10.
Two separate scales from 1 to 10. Strature never multiplies or merges them.
What changed
Dated, newest first
- Chinese coast guard ships in the Senkaku contiguous zone on 22 days (86 ship-days) and in the territorial sea on 1 day (4 ships), October 2026 to the 25th [1]
- Chinese coast guard ships have entered the contiguous zone almost every day since September 2012 [4]
- 5 Chinese coast guard ships shadowed 8 Japan Coast Guard ships near Penghu on 22 Oct 2026 [7]
- Japan exported 1.73tn yen of goods to China and imported 2.76tn yen in September 2026 [8]
- Takaichi's 7 Nov 2025 Diet remark on Taiwan; Chinese coast guard inside Senkaku waters on 16 Nov 2025; Japan seized a Chinese fishing boat on 13 Feb 2026; China refuses dialogue unless the remarks are retracted [6]
- September 2026: 30 days (120 ship-days) in the contiguous zone; 1 day (4 ships) in the territorial sea [2]
Why it matters
Chinese coast guard ships sit off the Senkaku Islands almost every day: 30 days out of 30 in September 2026, 22 days in October to the 25th. A Chinese carrier fighter locked its radar on Japanese F-15s twice in December 2025, and the diplomatic crisis that began in November 2025 is still open. No collision, gunfire or injury between the two states' ships or aircraft was found in the last three years; the risk is that one of these daily encounters goes wrong.
Why Likelihood 3 Pushes: Near-daily contact off the Senkakus [1][2]; Dec 2025 radar lock-ons [5]; No leader-level channel [6]; Penghu shadowing on 22 Oct 2026 [7]. Brakes: No collision, gunfire or injury in three years; Territorial-sea entries flat at about 1 day a month [1][2][3]; No injury in the lock-ons [5].
Why Impact 5 Threshold case: a collision with minor injuries.
Where it sits
How it spreads
Between 26 Oct 2026 and 31 Oct 2027, a Japanese and a Chinese government ship or military aircraft collide, either side fires a weapon at the other's ship or aircraft, or a crew member of either side is injured in an encounter between them (shadowing, radar lock-on and water cannon alone do not count).
Not under wayChannels 3 on the card
Goods 1
Sectors 3
- Ports and logistics
- Banks and insurers
- Technology
Straits 1
Who is exposed
- Sectors
- Ports and logistics, Banks and insurers, Technology
- Goods
- Semiconductors
- Straits
- Taiwan Strait
Three scenarios and their signposts
- S1
Tense but managed
Daily presence continues; protests, no contact.
- S2
A thaw at APEC
A Xi-Takaichi meeting at APEC in Shenzhen reopens a maritime hotline.
- S3
A collision
A standoff near the Senkakus or a shadowing near Taiwan ends in contact and injuries.
| Path | Signpost |
|---|---|
| S1 | Monthly JCG counts stay near 30 days and 1 intrusion |
| S2 | China accepts a leaders' meeting for 18-19 Nov 2026 (it says its stance will not change while the remarks stand) |
| S3 | Territorial-sea intrusions above 3 days a month, or a new radar lock-on |
No probability is given for the three paths.
Dates to watch
The dates to watch
A dot is a day, a bar a month or a year; a hollow mark is tentative. The line marks today.
- Nov 2026 JCG count for October 2026 (final) [1] Tentative · Outside event
- 18 Nov 2026 APEC leaders' week in Shenzhen (18-19 Nov); a Xi-Takaichi meeting is sought [6] Tentative · Outside event
- 31 Oct 2027 Window ends Declared · Window
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The other side
A clean year of encounters with a working hotline would cut the war-risk premium the shipping trade prices into the East China Sea (Strature's view). Japan's push to buy chip tools, rare earths and crude outside China opens room for allied suppliers, Canada's critical minerals among them.
Connected in Strature
- Taiwan
- Semiconductors
- Taiwan Strait
- Japan
- China
- Taiwan
- China puts a new curb on civilian trade with Japan Drives: A clash would widen China's economic pressure on Japan, already seen in flights and tourism [6].
- China squeezes Taiwan's sea lanes: quarantine or blockade Shares a channel: The 22 Oct 2026 Penghu shadowing took place in the same waters [7].
- Japan or China puts new export controls on chip materials or tools aimed at the other Shares a channel: Both turn on the same 2025-26 Japan-China crisis [6].
Sources
9 sources, numbered as the text cites them
- Chinese coast guard vessels near the Senkaku Islands, October 2026 (as of 25 Oct). Japan Coast Guard · 25 Oct 2026 · Official · confidence high · retrieved 26 Oct 2026
- Chinese coast guard vessels near the Senkaku Islands, September 2026 (as of 30 Sep). Japan Coast Guard · 30 Sep 2026 · Official · confidence high · retrieved 26 Oct 2026
- Chinese coast guard vessels near the Senkaku Islands, October 2025 (as of 31 Oct). Japan Coast Guard · 31 Oct 2025 · Official · confidence high · retrieved 26 Oct 2026
- Situation around the Senkaku Islands (overview page). Japan Coast Guard · 2026 · Official · confidence high · retrieved 26 Oct 2026
- Chinese military aircraft locks radar on ASDF jets (Jiji Press). Adnkronos · 7 Dec 2025 · News · confidence medium · retrieved 26 Oct 2026
- 2025-2026 China-Japan diplomatic crisis. Wikipedia · 2026-10 · Commentary · confidence low · retrieved 26 Oct 2026
- 8 Japan Coast Guard vessels shadowed by China near Penghu: Taiwan. Focus Taiwan (CNA) · 23 Oct 2026 · News · confidence medium · retrieved 26 Oct 2026
- Value of Exports and Imports, September 2026 (Provisional). Ministry of Finance Japan · 21 Oct 2026 · Official · confidence high · retrieved 26 Oct 2026
- Foreign Exchange Rates, H.10. Federal Reserve Board · 19 Oct 2026 · Official · confidence high · retrieved 26 Oct 2026
Reviewed 25 Oct 2026 · version 1 · last change: reviewed · All risks