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# Royal Navy commissions sixth Astute class submarine HMS Agamemnon
- URL: https://sovereigntymonitor.eu/news/2025-09-22-hms-agamemnon-astute-commissioned/
- Published: 2025-09-22T12:00:00.000Z
- Updated: 2026-10-15T04:01:14.000Z
- Description: The Royal Navy commissioned HMS Agamemnon, its sixth Astute class nuclear powered attack submarine, at Barrow in Furness on 22 September 2025, twelve years after the boat was laid down, with sea trials still to follow.
- Author: Reidar Balstad
- Tags: Defence and space, #news, #reported, #editor-read

Reported Editor-read [European Security & Defence, 22 September 2025](https://euro-sd.com/2025/09/major-news/46822/sixth-astute-ssn-commissioned/?ref=sovereigntymonitor.eu)

**What it does not test.** It does not establish that the submarine is operationally ready, since full service is expected only after further trials in about 18 months.

**How this item counts.** This item is dated before the index starts on 1 January 2026, so it does not count in the [European Sovereignty Index](https://sovereigntymonitor.eu/sovereignty-index/).

**How this item was made.** Drafted by an AI system (Claude (Anthropic)) from the source cited above; read and approved by the editor on 2026-10-14\. [How the record is made](https://sovereigntymonitor.eu/method/#how-the-record-is-made)