Pacific Ocean
From Tardis Wiki, the free Doctor Who reference
The Pacific Ocean was an Earth ocean that bordered North America, South America, Asia, and Australia.
The island of Salutua was located in the Pacific as was the port of Honolulu. (MA: The Eye of the Giant)
In 2050, an alliance known as the Pacific Union was active. It was presumably based around the Pacific Ocean. (K9TV: Lost Library of Ukko)