Off-Nadir Delta

Activity of a Russian Navy vessel in the waters surrounding Japan

Titles and summaries are AI-extracted from news reporting; every source is linked below. Event id 39d96896-497a-4df4-93e5-8a29f06af123.

Where
Yonaguni-jima Islandresolved to locality24.456, 122.988
When
Occurrence date not stated by reportingFirst reported 2026-09-28
Sourcing
1 reports1 outlet carrying it · independence not established
How far this got
localizedno finer place namedThis signal has no sensor recommendation, so there is nothing specific to look for.

Summary

On September 25, 2026, the Japan Maritime Self-Defense Force (JMSDF) spotted a Russian Federation Navy (RFN) Steregushchiy-class FFG (hull number 343) sailing northeastward in the waters approximately 80 km south of Yonaguni-jima Island. The vessel continued to sail northeastward through the waters between Yonaguni-jima Island and Iriomote-jima Island on September 26 and sailed northeastward through Tsushima Strait into the Sea of Japan from September 27 to 28. This is the same vessel that sailed southwestward through Tsushima Strait from September 12 to 13 and sailed southwestward through the waters between Yonaguni-jima Island and Iriomote-jima Island into the Pacific Ocean on September 15. JMSDF assets monitored the activities of the vessel.

What imagery could confirm

Which satellite to use, what to look for and why. Part of the event detail on Pro.

What remains unresolved

  • no finer place named

Sources

Grouped by outlet. Syndication is not collapsed, so several outlets can carry one wire story — the count is breadth of carriage, not independent confirmation.

Related events

82 related event(s) and 3 place(s) or facilities — the same facility, place, actor or campaign. Part of the event detail on Pro.

Reproduce over the API (free endpoint)

bash
curl "https://offnadir-delta.com/api/v1/events/39d96896-497a-4df4-93e5-8a29f06af123/thread" \
  -H "Authorization: Bearer ond_YOUR_API_KEY"

For situational awareness only — not for tracking or targeting individuals. Every claim above links to its reporting; satellite fields are the same values the API serves.