Cornwallis South Reef

The reef measures approximately 10 kilometers in length and 5 kilometers in width, remaining completely underwater during high tide periods.

In 2009, Vietnam submitted a declaration to the UN Commission acknowledging that its continental shelf does not extend to this reef location.

The reef represents a critical point in maritime traditions, where multiple nations assert territorial claims based on historical navigation patterns.

Maritime vessels require specific permits and authorizations to navigate near the reef due to international territorial regulations.

Between 2014 and 2015, two navigation channels were created through dredging operations to enable maritime access into the reef lagoon.

GPS coordinates: 8.71000,114.18500

Latest update: March 6, 2025 17:16