Boston Harbor.
From Eastern Point Lighthouse 215° (SW. ⅜ W.) 15¾ miles, to The Graves Lighthouse; thence 139¼° (SSE. ⅜ E.), 7½ miles, to Minots Ledge Lighthouse.
All Harbors in Cape Cod Bay, Mass.
A line drawn from Plymouth (Gurnet) Lighthouses 77½° (E. ⅛ S.), 16¼ miles, to Race Point Lighthouse.
Nantucket Sound, Vineyard Sound, Buzzards Bay, Narragansett Bay, Block Island Sound, and Easterly entrance to Long Island Sound.
A line drawn from Chatham Lighthouses, Mass., 146° (S. by E. ¾ E.), 4⅜ miles, to Pollock Rip Slue Light Vessel; thence 142° (SSE. ⅛ E.), 12¾ miles, to Great Round Shoal Entrance Gas and Whistling Buoy (PS); thence 229° (SW. by W. ⅝ W.), 14½ miles, to Sankaty Head Lighthouse; from Smith Point, Nantucket Island, 261° (W. ⅜ N.), 27 miles, to No Mans Land Gas and Whistling Buoy, 2; thence 359° (N. by E. ⅛ E.), 8⅛ miles, to Gay Head Lighthouse; thence 250° (W. ⅝ S.), 34½ miles, to Block Island Southeast Lighthouse; thence 250½° (W. ⅝ S.), 14¾ miles, to Montauk Point Lighthouse, on the easterly end of Long Island, N. Y.
New York Harbor.
A line drawn from Rockaway Point Coast Guard Station 159½° (S. by E.), 6¼ miles, to Ambrose Channel Light Vessel; thence 238½° (WSW. ⅛ W.), 8¼ miles, to Navesink (southerly) Lighthouse.
Philadelphia Harbor and Delaware Bay.
A line drawn from Cape May Lighthouse 200° (SSW. ½ W.), 8½ miles, to Overfalls Light Vessel; thence 246¼° (WSW. ½ W.), 3⅛ miles, to Cape Henlopen Lighthouse.