33 C.F.R. § 110.10 Portsmouth Harbor, New Hampshire, north of Newcastle Island.
Title 33 - Navigation and Navigable Waters
From the northern most point of Goat Island to latitude 43°04'25" N, longitude 070°43'37" W; thence 089°30' for 1025 yards; thence 120° for 285 yards, thence 213° to the shoreline of Newcastle Island, thence along the shoreline of Newcastle Island and across the breakwater to Goat Island and to the point of beginning. [CGD 83–1R, 48 FR 56578, Dec. 22, 1983]
Title 33: Navigation and Navigable Waters
PART 110—ANCHORAGE REGULATIONS
Subpart A—Special Anchorage Areas
§ 110.10 Portsmouth Harbor, New Hampshire, north of Newcastle Island.