Apra Harbor Guam is a port on the western side of Guam. Apra Harbor is a deep-water port, located near the Mariana Islands and close to the Mariana Trench, which is the deepest portion of ocean in the world. The southern end of Apra Harbor is a current U.S. naval station, while the northern end of Apra Harbor is a main commercial port in Guam. Apra Harbor is considered to be one of the best natural ports in the Pacific and is a major Guam tourist attraction. One of the biggest Guam tourist attractions in Apra Harbor is the Asan Overlook. The Asan Overlook is home to a World War II memorial site. The names of the men and women who endured the war during the Japanese occupation have been carved into the walls. From the Asan Overlook, visitors will also have an incredible view of Apra Harbor Guam and the battle area where US Marines first stormed the beach to liberate Guam on July 21^st, 1944. Liberation Day is still one of the major national holidays in Guam and is celebrated each July, with the bulk of the celebration taking place in Hagatna.

Apra Harbor is a beautiful, deep-water port that can accommodate the largest of Naval vessels including aircraft carriers. Guam Shipyard provides superb repair and maintenance for our vessels, and Kilo Wharf features the only deep water ammunition port in the western pacific where a loaded ammunition ship can go pier side and get much needed maintenance accomplished.

The third FBM advance anchorage site, at Apra Harbor, Guam, became operational on 1 December 1964 with USS Proteus (AS-19) as the FBM tender. The USS Proteus (AS- 19) had opened all three FBM anchorage sites. Polaris system support continued until the last SSBN - the Robert E. Lee, departed Guam in July 1981

The USS FRANK CABLE (AS 40) changed homeport to Agaña, Guam, where it is the sole mobile-support platform for all SEVENTH Fleet ships and submarines.