visible on a dark night with a clear atmosphere at a distance of at least 1 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. (Art. 9 (d), 30 Stat. 98; 33 U. S. C. 178)

SIGNALS, DAY OR NIGHT, AT ANCHOR, OR UNDER WAY, UNITED STATES COAST AND GEODETIC SURVEY VESSELS

312.33 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.

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

UNAUTHORIZED USE OF LIGHTS; UNNECESSARY WHISTLING

312.34 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 section 4450, R. S., as amended, looking to the revocation or suspension of his license or certificate.

312.35 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 section 4450, R. S., as amended, looking to a revocation or suspension of his license.

312.36 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 section 4450, R. S., as amended, looking to a suspension or revocation of his license.

Section 304.1 Tows of seagoing barges within inland waters.— Tows of seagoing barges navigating the inland waters of the United States are limited in length to five vessels, including the towing vessel or vessels.6

304.2 Hawser length; general. With the exceptions noted below, hawsers are limited in length to 75 fathoms, measured from the stern of one vessel to the bow of the following vessel; and should in all cases be as much shorter as the weather or sea will permit.

304.3 Hawser length; exceptions. In all cases where, in the opinion of the master of the towing vessel, it is dangerous or inadvisable, whether on account of the state of the weather, or sea, or otherwise, to shorten hawsers, hawsers need not be shortened to the prescribed length, except that hawsers must in any event be shortened to the prescribed length upon reaching the applicable locality named below:

(a) Tows from sea or Chesapeake Bay bound for Hampton Roads or beyond, before passing Thimble Light.

(b) Tows bound up the Chesapeake to the northward of Baltimore Light.

(c) Tows bound up into New York from sea, at West Bank.

(d) Tows bound up the Delaware, between Fourteen Foot Bank and Cross Ledge Lighthouses.

(e) Tows from sea to Narragansett Bay, before reaching Rose Island.

(f) Hawsers may also be lengthened in the same places, under the same circumstances when tows are bound out.

304.4 Bunching of tows.-In all cases where tows can be bunched, it should be done.

(a) Tows navigating in the North and East Rivers of New York must be bunched above a line drawn between Robbins Reef Lighthouse and Owls Head, Brooklyn, but the quarantine anchorage and the north entrance to Ambrose Channel shall be avoided in the process of bunching tows. In the discretion of the master of the towing vessel, when tows are entering Long Island Sound from the

§§ 304.1 to 304.5, inclusive, issued under the authority contained in sec. 14, 35 Stat. 428; 33 U. S. C. 152.

westward, hawsers may be lengthened out after passing Fort Schuyler, and when entering Long Island Sound from the eastward, hawsers need not be shortened to the prescribed length until reaching Fort Schuyler.

(b) Tows must be bunched above the mouth of the Schuylkill River, Pa.

304.5 Reporting violations.-Any violation of the regulations in this part shall be reported in writing as soon as practicable to the DISTRICT COAST GUARD OFFICER most convenient to the officer or other person who may witness the violation:

302.45 St. Simon Sound, St. Andrew 302.120 Juan de Fuca Strait, Wash

Sound, and Cumberland
Sound.

302.50 St. Johns River, Fla.

302.55 Florida Reefs and Keys from

Miami to Marquesas Keys.

ington and Puget Sounds. 302.125 Columbia River Entrance. 302.130 San Francisco Harbor. 302.135 San Pedro Bay. 302.140 San Diego Harbor.

Section 302.1 Boundary lines of inland waters.-The following lines dividing the high seas from rivers, harbors, and inland waters are hereby designated and defined. Waters inshore of the lines here laid down are "inland waters," and upon them the Inland Rules and Pilot Rules made in pursuance thereof apply. Upon the high seas, viz., waters outside of the lines here laid down, the international rules apply. The following lines in this part shall be effective on and after June 1, 1935.7

302.2 General rule for inland waters on the Atlantic, Gulf, and Pacific coasts of the United States. At all buoyed entrances from seaward to bays, sounds, rivers, or other estuaries for which specific lines are not prescribed herein, Inland Rules of the Road shall apply

§§ 302.1 to 302.140, inclusive, issued under the authority contained in sec. 2, 28 Stat. 672; 33 U. S. C. 151.

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.

Pilot Rules for Western Rivers shall apply in rivers flowing into the Gulf of Mexico except as hereinafter stated.

302.3 Modifications of general rule.-Lines of demarcation have been established for the following specific areas of inland waters on the Atlantic and Pacific coasts of the United States where the Inland Rules of the Road are to be followed; and inland waters of the United States bordering on the Gulf of Mexico where the Inland Rules of the Road or Pilot Rules for Western Rivers are to be followed.

ATLANTIC COAST

302.5 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 Whistle Buoy 1 to the southeasternmost extremity of Long Point, Maine, to the southeasternmost extremity of Little River Head; thence to the other side 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 Rock 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.

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

302.15 Nantucket Sound, Vineyard Sound, Buzzards 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 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. 302.20 New York Harbor.-A line drawn from Rockaway Point Coast Guard Station to Ambrose Channel Lightship; thence to Navesink Lighthouse (south tower).

302.25 Delaware Bay and tributaries.-A line drawn from Cape May East Jetty Light to Cape May Harbor Whistle Buoy; thence to Overfalls Lightship; thence to Cape Henlopen Coast Guard Station. 302.30 Chesapeake Bay and tributaries.-A line drawn from Cape Charles Lighthouse to Cape Henry Lighthouse.

302.35 Charleston Harbor.-A line drawn from Sullivans Island Coast Guard Station to Charleston Lighted Whistle Buoy C; thence to Charleston Lighthouse.

302.40 Savannah Harbor.-A line drawn from the southwesternmost extremity of Braddock Point to Tybee Lighted Whistle Buoy T;

thence to a tank on Tybee Island beach, bearing approximately 281°. 302.45 St. Simon Sound, St. Andrew Sound, and Cumberland Sound. Starting from the hotel located approximately 34-mile, 6312° true, from St. Simon (rear) Lighthouse, a line drawn to St. Simon Lighted Whistle Buoy St. S.; thence to St. Andrew Sound Bar Buoy; thence to Fernandina Lighted Whistle Buoy 1F; thence to Amelia Island Lighthouse.

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

302.55 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; 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

302.60 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.

302.65 San Carlos Bay and tributaries.-A line drawn from Estero Pass Light to Caloosa Lighted Bell Buoy 2; thence to Sanibel Island Lighthouse.

Pilot Rules for Western Rivers are to be followed to Caloosahatchee River northward of a line drawn from the westernmost extremity of the shore line at Punta Rasa to Sword Point.

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

302.75 Peace and Miakka Rivers.-Pilot Rules for Western Rivers are to be followed in Peace and Miakka Rivers north of Mangrove Point Light.

302.80 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 Lighted Bell Buoy; thence to a spire on the northeast side of Anna Maria Key, bearing approximately 109°.

302.85 Manatee and Hillsboro Rivers.-Pilot Rules of Western Rivers are to be followed in Manatee River inside Manatee River Entrance Buoy 2; and in Hillsboro River north of Pratt Street Bridge.

302.89 Apalachee Bay, Fla. Those waters lying north of a line drawn 58° true from Lighthouse Point on St. James Island to Gamble Point on the east side of the entrance to the Aucilla River, Fla.

Pilot Rules for Western Rivers are to be followed in the Wakulla River inside Wakulla River Entrance Buoy 2, in Ochlockonee River north of its junction with Ochlockonee Bay, and in Aucilla River inside a line from the extremity of Gamble Point to the extremity of Cabell Point.