Romer Shoal Light is a sparkplug lighthouse in Lower New York Bay, on the north edge of the Swash Channel, about ⁄4 nautical mile (1.4 km; 0.86 mi) south of Ambrose Channel and 2 1⁄2 nautical miles (4.6 km; 2.9 mi) north of Sandy Hook, New Jersey, in the entrance to New York Harbor.[6] It is in New Jersey, very close to the border with New York.[7]