H0814211H08142: NOS Hydrographic Survey , Vicinity of Three Arm Islands, Alaska, 1954-07-12 (ID: boundingGeographicBoundingBox) Coastal, navigationally significant waters of the United States of America, U.S. protectorates, and partner sovereign nations. at E: -177.176633999521, W: -177.419754000027, N: 51.9488720001785, S: 51.7478639992763#footprint-177.419754000027,51.7478639992763 -177.176633999521,51.7478639992763 -177.176633999521,51.9488720001785 -177.419754000027,51.9488720001785 -177.419754000027,51.7478639992763