David

The monitoring vessels appear to have shuffled to a test-like configuration overnight/this morning, leaving Matochkin Shar and journeying north, up along the west coast. But as ever; impossible to say a test is underway from vessel positions alone.

EFIM KOSTYUKOV has had enough and appears to be returning to the mainland; MARS also departing - removing the pier is something that takes a couple of days, but it seems because of timing around landing/removing stuff from other vessels, delays with weather etc, they got stuck up there for ~3 weeks.

The monitoring vessels appear to have shuffled to a test-like configuration overnight/this morning, leaving Matochkin Shar and journeying north, up along the west coast. But as ever; impossible to say a test is underway from vessel positions alone.

Teriberka sitting in Belushya Guba from the same pass yesterday; it stopped off there before continuing north to Pankovo/Gribovaya Bay.

Re: MYRA, there was a Sentinel 1 pass off the Atlantic coast of Ireland earlier tonight at 18:39 UTC. Strongest return I can see in the general area is circa 55.624 -14.256, which would be southeast of its last reported AIS position report, but I couldn't say it's MYRA.

Irish Coast Guard King Air up from Shannon

The monitoring vessels appear to have shuffled to a test-like configuration overnight/this morning, leaving Matochkin Shar and journeying north, up along the west coast. But as ever; impossible to say a test is underway from vessel positions alone.

The vessels are returning from their positions, back to regroup in Matochkin Shar. So that's the end of this test, or, whatever it was. We wait and see what happens next. Teriberka is on the way & Mars is back in the bay to finally remove to floating pier.

The monitoring vessels appear to have shuffled to a test-like configuration overnight/this morning, leaving Matochkin Shar and journeying north, up along the west coast. But as ever; impossible to say a test is underway from vessel positions alone.

A comparison of vessel positions around 12 UTC today, with the test setup during 21st of October 2025, for whatever it's worth. Again, not proof of anything, but perhaps at least worth noting. It will be interesting to see how long they stay out for.

The monitoring vessels appear to have shuffled to a test-like configuration overnight/this morning, leaving Matochkin Shar and journeying north, up along the west coast. But as ever; impossible to say a test is underway from vessel positions alone.

*west & east coasts. Some delays in AIS updates from Geolog Peckurov & Bykhov (my tells) but they appear to have moved based on this mornings Sentinels 1 pass.

Quick update on any possible test of Burevestnik from the Pankovo site in Novaya Zemlya: 1) The monitoring vessels are still up there 2) The NOTAMs are still active 3) The weather hasn't been great 4) TERIBERKA is on the way again from Arkhangelsk - this might explain why tug MARS is still up there

www.youtube.com/watch?v=bIIG...

An attempt at combining the ISC's seismological data (www.isc.ac.uk) with test notes from "Nuclear Explosions in the USSR: The North Test Site" (www-ns.iaea.org/downloads/rw...) for nuclear tests in Zone B/Severny, Novaya Zemlya. Locations aren't exact; many show outside the Zone B rectangle.