US and UK navies test heavy torpedo launch from uncrewed submarine

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Posted Sep 28, 2026, 10:30 AM UTC · In the digest of 2026-09-28-1030
US and UK navies test heavy torpedo launch from uncrewed submarine
Photo: Defence Turk

The US Navy and British Royal Navy successfully launched an Mk 48 training torpedo from the autonomous XV EXCALIBUR submarine during a joint defense demonstration.

The United States Navy and the United Kingdom's Royal Navy have completed a successful joint demonstration, firing an Mk 48 training torpedo from an uncrewed underwater vessel. The test utilized the Royal Navy's XV EXCALIBUR autonomous submarine to deploy the American heavy torpedo system.

Conducted under the joint Project Broadsword and Trial Iron initiatives, the trial marks a notable technical advancement for maritime defense capabilities. Officials view the integration of heavy weaponry onto autonomous platform operational concepts as a significant milestone within the broader AUKUS Pillar 2 framework, which focuses on advanced technology sharing between Australia, the UK, and the US.

Sources: Defence Turk

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