H0827711H08277: NOS Hydrographic Survey , Smith Point to Mob Neck, Potomac River, Maryland-Virginia, 1955-09-27 (ID: boundingGeographicBoundingBox) Coastal, navigationally significant waters of the United States of America, U.S. protectorates, and partner sovereign nations. at E: -76.1650919994734, W: -76.3268720003176, N: 37.9137279998839, S: 37.8362340001164#footprint-76.3268720003176,37.8362340001164 -76.1650919994734,37.8362340001164 -76.1650919994734,37.9137279998839 -76.3268720003176,37.9137279998839 -76.3268720003176,37.8362340001164