(c) The white lights required by this section shall be carried from sunset to sunrise, in a lantern so fixed and constructed as to show a clear, uniform, and unbroken light, visible all around the horizon, and of such intensity as to be visible on a dark night with a clear atmosphere at a distance of at least one mile. The lights for rafts shall be suspended from poles of such height that the lights shall not be less than 8 feet above the surface of the water, except that the lights prescribed for unstable log rafts shall not be less than 4 feet above the water.

SPECIAL DAY OR NIGHT SIGNALS

80.32a Day marks for fishing vessels with gear out.-All vessels or boats fishing with nets or lines or trawls, when under way, shall in daytime indicate their occupation to an approaching vessel by displaying a basket where it can best be seen. If the vessels or boats at anchor have their gear out, they shall, on the approach of other vessels, show the same signal in the direction from the anchor back towards the nets or gear.

80.33 Special signals for vessels employed in hydrographic surveying. By day a surveying vessel of the Coast and Geodetic •Survey, under way and employed in hydrographic surveying, may carry in a vertical line, one over the other not less than 6 feet apart where they can best be seen, three shapes not less than 2 feet in diameter of which the highest and lowest shall be globular in shape and green in color and the middle one diamond in shape and white. (a) Vessels of the Coast and Geodetic Survey shall carry the above-prescribed marks while actually engaged in hydrographic surveying and under way, including drag work. Launches and other boats shall carry the prescribed marks when necessary.

(b) It must be distinctly understood that these special signals serve only to indicate the nature of the work upon which the vessel is engaged and in no way give the surveying vessel the right-of-way over other vessels or obviate the necessity for a strict observance of the rules for preventing collisions of vessels.

(c) By night a surveying vessel of the Coast and Geodetic Survey, under way and employed in hydrographic surveying, shall carry the regular lights prescribed by the rules of the road.

(d) A vessel of the Coast and Geodetic Survey, when at anchor in a fairway on surveying operations, shall display from the mast during the daytime two black balls in a vertical line and 6 feet apart. At night two red lights shall be displayed in the same manner. In the case of a small vessel the distance between the balls and between the lights may be reduced to 3 feet if necessary.

(e) Such vessels, when at anchor in a fairway on surveying operations, shall have at hand and show, if necessary, in order to attract attention, a flare-up light in addition to the lights which are, by this section, required to be carried.

80.33a Warning signals for Coast Guard vessels while handling or servicing aids to navigation. (a) Coast Guard vessels while engaged in handling or servicing an aid to navigation during the daytime may display from the yard two orange and white vertically striped balls in a vertical line not less than three feet nor more than six feet apart, and during the nighttime may display, in a position where they may best be seen, two red lights in a vertical line not less than three feet nor more than six feet apart.

(b) Vessels, with or without tows, passing Coast Guard vessels displaying this signal, shall reduce their speed sufficiently to insure the safety of both vessels, and when passing within 200 feet of the Coast Guard vessel displaying this signal, their speed shall not exceed 5 miles per hour.

CROSS REFERENCE: For rules of the road, see page 1.

UNAUTHORIZED USE OF LIGHTS; UNNECESSARY WHISTLING

80.34 Rule relating to the use of searchlights or other blinding lights. Flashing the rays of a searchlight or other blinding light onto the bridge or into the pilothouse of any vessel under way is prohibited. Any person who shall flash or cause to be flashed the rays of a blinding light in violation of the above may be proceeded against in accordance with the provisions of R. S. 4450, as amended, looking to the revocation or suspension of his license or certificate.

R. S. 4405, as amended; 46 U. S. C. 375.

80.35 Rule prohibiting unnecessary sounding of the whistle.— Unnecessary sounding of the whistle is prohibited within any harbor limits of the United States. Whenever any licensed officer in charge of any vessel shall authorize or permit such unnecessary whistling, such officer may be proceeded against in accordance with the provisions of R. S. 4450, as amended, looking to a revocation or suspension of his license.

R. S. 4405, as amended; 46 U. S. C. 375.

80.36 Rule prohibiting the carrying of unauthorized lights on vessels. Any master or pilot of any vessel who shall authorize or permit the carrying of any light, electric or otherwise, not required by law, that in any way will interfere with distinguishing the signal lights, may be proceeded against in accordance with the provisions of R. S. 4450, as amended, looking to a suspension or revocation of his license.

R. S. 4405, as amended; 46 U. S. C. 375.

AUTHORITY: §§ 82.1 to 82.275, inclusive, issued under sec. 2, 28 Stat. 672, 33 U. S. C. 151.

82.235

82.240

82.245

Alaska

82.275

GENERAL

Section 82.1 General basis and purpose of boundary lines.-By virtue of the authority vested in the Commandant of the Coast Guard under section 101 of Reorganization Plan No. 3 of 1946 (11 F. R. 7875), and section 2 of the act of February 19, 1895, as amended (28 Stat. 672, 33 U. S. C. 151), the regulations in this part are prescribed to establish the lines dividing the high seas from rivers, harbors, and inland waters in accordance with the intent of the statute and to obtain its correct and uniform administration. The waters inshore of the lines described

in this part are "inland waters," and upon them the Inland Rules and Pilot Rules made in pursuance thereof apply. The waters outside of the lines described in this part are the high seas and upon them the International Rules apply. The regulations in this part do not apply to the Great Lakes or their connecting and tributary waters.

82.2 General rules for inland waters.-At all buoyed entrances from seaward to bays, sounds, rivers, or other estuaries for which specific lines are not described in this part, the waters inshore of a line approximately parallel with the general trend of the shore, drawn through the outermost buoy or other aid to navigation of any system of aids, are inland waters, and upon them the Inland Rules and Pilot Rules made in pursuance thereof apply, except that Pilot Rules for Western Rivers apply to the Red River of the North, the Mississippi River and its tributaries above Huey P. Long Bridge, and that part of the Atchafalaya River above its junction with the PlaquemineMorgan City alternate waterway.

ATLANTIC COAST

82.5 All harbors on the coast of Maine, New Hampshire, and Massachusetts between West Quoddy Head, Maine, and Cape Ann Lighthouse, Mass.-A line drawn from Sail Rock Lighted Whistle Buoy 1 to the southeasternmost extremity of Long Point, Maine, to the southeasternmost extremity of Western Head; thence to the southeasternmost extremity of Old Man; thence to the southernmost extremity of Double Shot Islands; thence to Libby Islands Lighthouse; thence to Moose Peak Lighthouse; thence to the eastern extremity of Little Pond Head. A line drawn from the southern extremity of Pond Point, Great Wass Island, to the southernmost point of Crumple Island; thence to Petit Manan Lighthouse; thence to Mount Desert Lighthouse; thence to Matinicus Rock Lighthouse; thence to Monhegan Island Lighthouse; thence to Seguin Lighthouse; thence to Portland Lightship; thence to Boon Island Lighthouse; thence to Cape Ann Lighted Whistle Buoy 2.

82.10 Massachusetts Bay.-A line drawn from Cape Ann Lighted Whistle Buoy 2 to Boston Lightship; thence to Cape Cod Lighthouse.

82.15 Nantucket Sound, Vineyard Sound, Buzzard's Bay, Narragansett Bay, Block Island Sound, and easterly entrance to Long Island Sound.-A line drawn from Chatham Lighthouse to Pollock Rip Lightship; thence to Great Round Shoal Channel Entrance Lighted Whistle Buoy GRS; thence to Sankaty Head Lighthouse. A line drawn from the westernmost extremity of Smith Point, Nantucket Island, to No Mans Land Lighted Whistle Buoy 2; thence to Gay Head Lighthouse; thence to Block Island Southeast Lighthouse; thence to Montauk Point Lighthouse on the easterly end of Long Island, N. Y.

82.20 New York Harbor.-A line drawn from Rockaway Point Coast Guard Station to Ambrose Channel Lightship; thence to Navesink (abandoned) Lighthouse (south tower).

82.25 Delaware Bay and tributaries.-A line drawn from Cape May East Jetty Light to Cape May Inlet Lighted Bell Buoy 2CM;

thence to Overfalls Lightship; thence to the northernmost extremity of Cape Henlopen.

82.30 Chesapeake Bay and tributaries.-A line drawn from Cape Henry Lighthouse to Cape Henry Junction Lighted Whistle Buoy; thence to Cape Charles Lighthouse.

82.35 Charleston Harbor.—Ã line drawn from Sullivans Island Coast Guard Station to Charleston Lighted Whistle Buoy 2C; thence to Charleston Lighthouse.

82.40 Savannah Harbor.-A line drawn from the southwesternmost extremity of Braddock Point to Tybee Lighted Whistle Buoy T; thence to the southernmost point of Savannah Beach, bearing approximately 278°.

82.45 St. Simon Sound, St. Andrew Sound, and Cumberland Sound. Starting from the hotel located approximately 3/4 mile, 632° true, from St. Simon (rear) Lighthouse, a line drawn to St. Simon Lighted Whistle Buoy St. S; thence to St. Andrew Sound Outer Entrance Buoy; thence to St. Marys Entrance Lighted Whistle Buoy 1STM; thence to Amelia Island Lighthouse.

82.50 St. Johns River, Fla.-A line drawn from the east end of the north jetty to the east end of the south jetty.

82.55 Florida Reefs and Keys from Miami to Marquesas Keys.-A line drawn from the east end of the north jetty at the entrance to Miami, to Miami Lighted Whistle Buoy 2; thence to Fowey Rocks Lighthouse; thence to Pacific Reef Lighthouse; thence to Carysfort Reef Lighthouse; thence to Molasses Reef Lighthouse; thence to Alligator Reef Lighthouse; thence to Tennessee Reef Lighthouse; thence to Sombrero Key Lighthouse; thence to American Shoal Lighthouse; thence to Key West Entrance Lighted Whistle Buoy; thence to Sand Key Lighthouse; thence to Cosgrove Shoal Lighthouse; thence to westernmost extremity of Marquesas Keys.

GULF COAST

82.60 Florida Keys from Marquesas to Cape Sable.-A line drawn from the northwesternmost extremity of Marquesas Keys to Northwest Channel Entrance Lighted Bell Buoy 1; thence to the southernmost extremity of East Cape, Cape Sable.

82.65 San Carlos Bay and tributaries.-A line drawn from the northwesternmost point of Estero Island to Caloosa Lighted Bell Buoy 2; thence to Sanibel Island Lighthouse.

82.70 Charlotte Harbor, Fla., and tributaries.-Eastward of Charlotte Harbor Entrance Lighted Bell Buoy off Boca Grande.

82.80 Tampa Bay and tributaries.-A line drawn from the southernmost extremity of Long Key, Fla., to Tampa Bay Lighted Whistle Buoy; thence to Southwest Channel Entrance Lighted Bell Buoy 1; thence to a spire on the northeast side of Anna Maria Key, bearing approximately 109°.

82.89 Apalachee Bay, Fla.-Those waters lying north of a line drawn from Lighthouse Point on St. James Island to Gamble Point on the east side of the entrance to the Aucilla River, Fla.