H0827811H08278: NOS Hydrographic Survey , Smith Point to Mob Neck, Potomac River, Maryland-Virginia, 1955-09-30 (ID: boundingGeographicBoundingBox) Coastal, navigationally significant waters of the United States of America, U.S. protectorates, and partner sovereign nations. at E: -76.1927139998958, W: -76.326128000164, N: 37.9576560003432, S: 37.8837309996933#footprint-76.326128000164,37.8837309996933 -76.1927139998958,37.8837309996933 -76.1927139998958,37.9576560003432 -76.326128000164,37.9576560003432 -76.326128000164,37.8837309996933