Russia’s Khabarovsk nuclear submarine began sea trials in August 2026
The Khabarovsk, a nuclear-powered Russian special-purpose submarine designed to carry up to six Poseidon torpedoes, began sea trials in the White Sea on August 16–17, 2026. It was not yet operational and still required factory and state testing.
By DoomRadar · Published on DoomRadar . Updated .
Event date: The Khabarovsk began its first official sea trials in the White Sea on August 16–17, 2026. [2][3]
What happened
The Khabarovsk left Severodvinsk in mid-August for its first sea trials in the White Sea. Greek reporting placed the departure on August 16 or 17, while another account described August 17 as the date it was photographed leaving the shipyard. [2][3]
References for this detail (2)
- Το «υποβρύχιο της Αποκάλυψης» βγήκε στη θάλασσα: Το Khabarovsk μεταφέρει τις πυρηνικές τορπίλες Poseidon- Το μήνυμα προς τη Βρετανίαgazzetta.gr · Article published: Aug 25, 2026, 4:30 PM UTC
- Khabarovsk: Το πυρηνικό «υποβρύχιο της Αποκάλυψης» του Πούτιν ξεκίνησε «αθόρυβα» δοκιμές -Το απόρρητο πρότζεκτ της Ρωσίαςiefimerida.gr · Article published: Aug 25, 2026, 7:42 PM UTC
The submarine is nuclear-powered and built as a special-purpose vessel for the Poseidon system. The available reporting says it can carry up to six Poseidon torpedoes designed for nuclear warheads. [1][2]
References for this detail (2)
- Ρωσία: Ο Πούτιν εξαπέλυσε το πυρηνικό «υποβρύχιο της Αποκάλυψης»skai.gr · Article published: Aug 25, 2026, 8:00 AM UTC
- Το «υποβρύχιο της Αποκάλυψης» βγήκε στη θάλασσα: Το Khabarovsk μεταφέρει τις πυρηνικές τορπίλες Poseidon- Το μήνυμα προς τη Βρετανίαgazzetta.gr · Article published: Aug 25, 2026, 4:30 PM UTC
The Khabarovsk was launched in November 2025 and had not entered full service when the trials began. It still required factory and state testing before operational deployment. [3]
References for this detail (1)
- Khabarovsk: Το πυρηνικό «υποβρύχιο της Αποκάλυψης» του Πούτιν ξεκίνησε «αθόρυβα» δοκιμές -Το απόρρητο πρότζεκτ της Ρωσίαςiefimerida.gr · Article published: Aug 25, 2026, 7:42 PM UTC
The submarine’s reactor details and other technical specifications remained secret in the reporting. The sources therefore do not establish the complete performance or operational characteristics of the vessel. [3]
References for this detail (1)
- Khabarovsk: Το πυρηνικό «υποβρύχιο της Αποκάλυψης» του Πούτιν ξεκίνησε «αθόρυβα» δοκιμές -Το απόρρητο πρότζεκτ της Ρωσίαςiefimerida.gr · Article published: Aug 25, 2026, 7:42 PM UTC
If there were no delays, the Khabarovsk was expected to become fully operational in late 2026 or during 2027 and was intended for Russia’s Pacific Fleet. A dedicated support base for Poseidon weapons was reportedly being built there. [3]
References for this detail (1)
- Khabarovsk: Το πυρηνικό «υποβρύχιο της Αποκάλυψης» του Πούτιν ξεκίνησε «αθόρυβα» δοκιμές -Το απόρρητο πρότζεκτ της Ρωσίαςiefimerida.gr · Article published: Aug 25, 2026, 7:42 PM UTC
Context from the sources
Poseidon is described in the reporting as a nuclear-capable torpedo-drone intended for underwater launch. Claims that it could create exceptionally large coastal destruction describe the weapon’s alleged capability, not an event that occurred during these sea trials. [3]
Explore the sources and reporting timeline
3 source links · 3 domains
These counts describe the references, not independent confirmations. Different outlets can repeat the same original report.
Source timeline
Oldest to newest among the available source dates, not a chronology of the incident. Article publication dates come from the source; other recorded dates may reflect when a link was found.
- [1] Ρωσία: Ο Πούτιν εξαπέλυσε το πυρηνικό «υποβρύχιο της Αποκάλυψης»skai.grReferenced for: detail 2
- [2] Το «υποβρύχιο της Αποκάλυψης» βγήκε στη θάλασσα: Το Khabarovsk μεταφέρει τις πυρηνικές τορπίλες Poseidon- Το μήνυμα προς τη Βρετανίαgazzetta.grReferenced for: detail 1, detail 2
- [3] Khabarovsk: Το πυρηνικό «υποβρύχιο της Αποκάλυψης» του Πούτιν ξεκίνησε «αθόρυβα» δοκιμές -Το απόρρητο πρότζεκτ της Ρωσίαςiefimerida.grReferenced for: detail 1, detail 3, detail 4, detail 5
What this could mean for you
The programme could increase concern about Russia’s strategic military capabilities among governments monitoring the Pacific region.
Progress from construction to testing moves the submarine closer to possible operational service as a Poseidon carrier.
Reported basis: [3] · The possible effect is interpretation.
Depends on: Testing is completed, the vessel enters service and the planned Pacific assignment proceeds.
Possible time frame: months, if those conditions hold.
Possible consequences, not a forecast. Their relevance depends on your location and the conditions above.
For your country
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What changes the outlook
Risk increases if…
Successful completion of factory and state trials followed by entry into operational service.
A confirmed assignment of the submarine and Poseidon weapons to the Pacific Fleet.
Pressure eases if…
Testing delays or technical problems that prevent operational entry.
A confirmed decision to postpone or alter the planned Pacific deployment.
Still unclear
Whether the sea trials were completed successfully is not established.
The sources do not establish when, or whether, the submarine will receive operational Poseidon weapons or begin patrols.
Market implications
Market impact
Sources (3)
References for the reported details. Separate links do not necessarily mean independent confirmation.
Available excerpt
Στη σκιά του πολέμου στην Ουκρανία, το υποβρύχιο της «Αποκάλυψης» του Βλαντίμιρ Πούτιν, φορτωμένο με πυρηνικές τορπίλες, αναπτύχθηκε για πρώτη φορά, στέλνοντας μια ανατριχιαστική προειδοποίηση…A short excerpt from our source record; open the original for the full article.
Available excerpt
Χωρίς επίσημη ανακοίνωση και μακριά από τα φώτα της δημοσιότητας, το Khabarovsk, ένα από τα πλέον μυστηριώδη υποβρύχια της Ρωσίας, πραγματοποίησε την πρώτη του έξοδο…A short excerpt from our source record; open the original for the full article.
Available excerpt
Στην θάλασσα για τις πρώτες δοκιμές καταδύθηκε το ρωσικό πυρηνικό υποβρύχιο Khabarovsk, αφού φωτογραφήθηκε να φεύγει από ο εργοστάσιο κατασκευής στις 17 Αυγούστου. Το νέο,…A short excerpt from our source record; open the original for the full article.
First tracked by DoomRadar: . AI-assisted analysis · . Based on linked headlines and available excerpts. Methodology · Report an error.