Amook Bay Seaplane Base is a small, water-based aviation facility located in the remote Amook Bay area of Kodiak Island, Alaska. Designated with IATA code AOS and FAA/ICAO identifier AK81, it serves as a critical access point for communities and operations in this isolated region of southwestern Alaska. As a seaplane base, the facility supports float-equipped aircraft that land on and depart from the water, making it essential for reaching areas with no road or conventional runway access. It primarily serves local residents, fishing operations, and remote lodges in the area. The base is typical of the many small seaplane facilities scattered throughout coastal Alaska, where water-based aviation remains a vital mode of transportation connecting remote communities to larger population centers such as Kodiak.