Stonington Harbor—41˚20’10” N, 71˚54’49” W—is easily reached by boat from Long Island Sound and Fishers Island Sound. Located approximately 96 nautical miles east of the entrance to the East River in New York, roughly 120 miles south-southwest of Boston and about 18 miles north of Block Island, Stonington Harbor is well marked and deep, with a mean low water of 10 feet in the middle of the harbor. (Beware: if you go east past Stonington Point into Little Narragansett Bay, the water becomes quite shallow—1 – 5 feet MLW.)
From the west on Long Island Sound, pass north of Ram Island Shoal and Ram Island, between the white day beacon “ER” on Ellis Reef and the red buoy “4” on Cormorant Reef. Head toward red buoy “2” on Red Reef and the flashing green light on the breakwater off Wamphassuc Point—the harbor’s entrance is to port just beyond the light.
From the east and south, enter between Fishers Island and Watch Hill, Rhode Island, and head for the flashing red buoy “6”. From there head toward red buoy “2” in Fishers Island Sound and proceed north, staying well to port of Middle Ground and the breakwater. The harbor’s entrance is straight ahead and to starboard of Wamphassuc Point and the breakwater.