Maritime Big Play exercise in San Diego: AUKUS undersea sensor testing

UK, Australia and US tested advanced uncrewed underwater vehicles and sensor payloads at Maritime Big Play exercise in San Diego. The UK led the anti-submarine warfare strand, contributing thirteen uncrewed surface vehicles, two ASW targets and four underwater gliders from six industry partners.

Where

United States, San Diego

When

until 27 Oct 2026

With

Australia, United States

Last checked

6 Nov 2026

Sources

• UK sets pace on new undersea sensors to detect threats, as AUKUS partners test advanced kit in San Diego Ministry of Defence, 27 Oct 2026