Statement of Significance (as of designation - February 4, 1985):
In 1942-44, Japan's Combined Fleet operated out of Truk, a formidable advanced naval base. After the Combined Fleet had withdrawn because of the threat of American attack, a U.S. Navy carrier strike on February 17-18, 1944, destroyed virtually all remaining Japanese ships in the lagoon, and heavily damaged Japanese air and land defenses.

Condition:
The underwater fleet is experiencing significant deterioration, vandalism and looting. The theft of artifacts by divers has increased over the years. Spear and line fishing and small boats anchoring to the underwater fleet have caused damage to the resources.

Recommendation/Change since last report:
Dive shop operators, visiting divers and the Chuukese community need to be educated about the significance of the fleet and the importance of protecting the NHL and the artifacts.