[Code of Federal Regulations] [Title 46, Volume 1] [Revised as of January 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR7.20] [Page 73] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 7_BOUNDARY LINES--Table of Contents Sec. 7.20 Nantucket Sound, Vineyard Sound, Buzzards Bay, Narragansett Bay, MA, Block Island Sound and easterly entrance to Long Island Sound, NY. (a) A line drawn from Chatham Light to latitude 41[deg]36.1[min] N. longitude 69[deg]51.1[min] W. (Pollack Rip Entrance Lighted Horn Buoy ``PR''); thence to latitude 41[deg]26.0[min] N. longitude 69[deg]46.2[min] W. (Great Round Shoal Channel Lighted Buoy ``2''); thence to Sankaty Head Light. (b) A line drawn from the westernmost extremity of Nantucket Island to the southwesternmost extremity of Wasque Point, Chappaquiddick Island. (c) A line drawn from Gay Head Light to Block Island Southeast Light; thence to Montauk Point Light on the easterly end of Long Island.