A Chinese research vessel (the Tong Ji or another PLA-linked survey ship) is observed again within 30 nautical miles of a Taiwanese naval facility within 30 days of the August 21, 2026 Tong Ji sighting.
The wording, the opening probability, and the counter-signal below were fixed when this call was published. Updates revise the reading — never the record: the verdict is graded against the opening call.
The trajectory
The record since
The call stands as issued — no revisions.
What would overturn it
Taiwanese coast guard, MND, or credible outlet reporting of a further sighting by September 22, 2026 would confirm it; a month with no reported sighting near a naval facility would overturn it.
The verdict
Miss Resolved 28 Sep 26.
No further reported sighting of the Tong Ji or another PLA-linked survey ship within 30nm of a Taiwanese naval facility surfaced between Aug 21 and Sept 22, 2026; Taiwan/China trackers (AEI's Sept 11 update, Taipei Times) instead logged separate PRC research vessels (Xiang Yang Hong 03, Haiyang Dizhi 10) operating away from Taiwanese naval bases.
The claim's own resolution rule (silence overturns it) made this decidable, but it shows the risk of extrapolating a 'pattern' (three prior sightings since May) into a fixed 30-day recurrence -- the campaign continued in other forms (record CCG patrols, other survey ships elsewhere) without repeating the exact naval-facility-proximity marker.
Source: https://www.aei.org/commentary/china-taiwan-update-september-11-2026/
As logged at issue
A Chinese research vessel is likely to be spotted again near a Taiwanese naval facility within 30 days, extending a pattern that has already recurred three times since May -- a quiet month with no further sighting would suggest Beijing has throttled back this specific pressure tactic.
Cite this call
The Cursus Publicus, Call 2026-08-23-03 — recorded 23 Aug 26. https://archive.cursuspublic.us/calls/2026-08-23-03.html