US Navy Deploys USS Canberra and P-8A to Philippines for ADMM-Plus Maritime Exercise

September 20, 2026 at 09:23 PM1 min

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The U.S. Navy deployed the littoral combat ship USS Canberra and a P-8A Poseidon aircraft to Subic Bay, Philippines, for the ADMM-Plus maritime security exercise that began September 20, 2026. The deployment involves naval forces from seven regional partners and focuses on maritime domain awareness and interoperability. The exercise takes place amid ongoing encounters between Philippine and Chinese forces in the South China Sea.

Key Facts

The USS Canberra (LCS 30) and a P-8A Poseidon are operating from Subic Bay, Philippines, as part of the ADMM-Plus maritime security activity.
The exercise was launched on September 20, 2026, and is co-hosted by Japan and the Philippines.
Naval forces from seven regional partners are participating alongside the U.S. Navy.
The deployment focuses on maritime domain awareness, interoperability, and humanitarian assistance.

Deployment Details

The U.S. Navy deployment is part of the ADMM-Plus Experts’ Working Group on Maritime Security Joint Cooperative Activity. The activity was launched on September 20, 2026, and is co-hosted by Japan and the Philippines. U.S. Navy participation includes the Independence-variant littoral combat ship USS Canberra (LCS 30) and a P-8A Poseidon maritime patrol and reconnaissance aircraft. The forces are operating from Subic Bay, Philippines, alongside naval forces from seven regional partners.

Strategic Context

The multinational naval exercise is taking place in a region where maritime domain awareness, persistent surveillance, and rapid coordination have become increasingly important. Encounters between Philippine and Chinese forces continue to shape the South China Sea security environment. Recent U.S., Philippine, and allied maritime activities have emphasized maritime domain awareness, anti-submarine warfare, replenishment, and shared procedures inside the Philippine exclusive economic zone. The combination of surface ships and long-range maritime patrol aircraft expands coverage and enables participating forces to exchange information and coordinate responses across a wide operating area.