The Nantucket shoals, dangerous shallow waters in the Atlantic, include areas such as Madaket, the Great Point light, and points near Asia Rip and Fishing Rip.
Nantucket Shoals is an area of dangerously shallow water in the Atlantic Ocean that extends from Nantucket Island, Massachusetts, eastward for 23 miles (37 km) and southeastward for 40 miles (64 km); in places water depth can be as shallow as 3 feet (0.91 m). Madaket Great Point Light Near Asia Rip Near Fishing Rip According to the 2010 edition of the United States Coast Pilot, the International Maritime Organization has established an "area to be avoided" for the Nantucket Shoals. 
