Aunuu Small Boat Harbor is located on the western shoreline of Aunuu Island, opposite the island of Tutuila. The project was authorized under Section 107 of the Rivers and Harbors Act of 1960, as amended. Construction was completed in March 1981 at a total cost of $1,938,294 (Federal: $1,713,446; non-Federal: $93,647).
The completed project consisted of a northern revetted mole that is 300 feet long; a southern revetted mole that is 220 feet long; a stub breakwater that is 90 feet long; an entrance channel that is 70 feet wide, 14 feet deep, and 175 feet long; a wave absorber that is 200 feet long; and a service dock. The local sponsor is the American Samoa Government. The harbor provides navigation safety to boats ferrying people and goods between the small Aunuu community and the main island of Tutuila