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# EDA's MARSUR passes real time NATO interoperability test, eyes EU Secret status
- URL: https://sovereigntymonitor.eu/news/2026-09-23-eda-marsur-eu-secret-interoperability-test/
- Published: 2026-09-23T12:00:00.000Z
- Updated: 2026-09-24T10:55:35.000Z
- Description: EDA demonstrated real time data exchange between its MARSUR maritime surveillance network, national command systems and NATO during the REPMUS exercise, backing a funding request to upgrade 18 nodes to EU Secret classification with a 2028 target.
- Author: Reidar Balstad
- Tags: Defence and space, #news, #verified, #ai-drafted

Verified AI-drafted [European Defence Agency press release, 23 September 2026](https://eda.europa.eu/news-and-events/news/2026/09/23/eda-s-marsur--eu's-eyes-at-sea-talk-to-national-and-nato-systems-in-real-time?ref=sovereigntymonitor.eu)

**What it does not test.** Does not confirm the European Council has approved the funding request or that the classified network has been built.

**How this item counts.** No movement: no answer to who owns, who operates, whose law governs or who made the parts changes. Weight 0\. Test passed but EU Secret upgrade funding request not yet approved, network unbuilt. [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 and published under the editor’s responsibility without a person reading it first. [How the record is made](https://sovereigntymonitor.eu/method/#how-the-record-is-made)