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UK Navy Ships Assert UNCLOS Rights in China-Claimed Waters

9/4/2026

20 4 Full Breakdown

Summary

Story summary

British HMS Tamar and Australian HMAS Perth exercised navigation rights in waters claimed by China.
UK Ministry of Defence said the operation followed UNCLOS rules.
Tamar and sister ship HMS Spey have been forward-deployed to the Indo-Pacific since 2021.
On 20 August, Tamar docked at Cambodia’s Ream Naval Base, the first Royal Navy warship.
Cambodian patrol craft escorted Tamar at Ream Naval Base.

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Story summary

British HMS Tamar and Australian HMAS Perth exercised navigation rights in waters claimed by China.
UK Ministry of Defence said the operation followed UNCLOS rules.
Tamar and sister ship HMS Spey have been forward-deployed to the Indo-Pacific since 2021.
On 20 August, Tamar docked at Cambodia’s Ream Naval Base, the first Royal Navy warship.
Cambodian patrol craft escorted Tamar at Ream Naval Base.