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U.S., UK and Australia Complete Largest Maritime Autonomous Systems Demonstration Off San Diego After Three Weeks

Monday, November 9, 2026 · Society · GSM News

SAN DIEGO, Calif. — Australia's Department of Defence announced on November 9 that Australia, the United Kingdom and the United States have completed the largest demonstration of interoperable maritime autonomous systems to date under AUKUS Pillar II, held off San Diego in San Diego County, California.

The three-week activity, Maritime Big Play Pacific, brought together defence personnel, scientists and industry partners from the three nations to test autonomous platforms in complex, realistic mission scenarios and to strengthen trilateral interoperability. It marked the culmination of three years of joint trilateral experimentation through the Maritime Big Play series.

On the British side, two companies funded by UK Defence Innovation, SEA Ltd and DAS Ltd, also demonstrated maritime technologies at the event, including underwater communications and coordination among autonomous underwater vehicles. The exercise aimed to advance the three partners' ability to operate autonomous systems together above and below the surface.

Source: Australian Department of Defence

Published by GSM · USA (original Chinese edition)

Photo: 美国海军两栖攻击舰 Essex 号在圣迭戈湾。(Official Navy Page from United States of America MCCS Joe K 摄,Public domain,经 Wikimedia Commons)

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