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(c) Diagrams.The following diagrams are intended to illustrate the working of the system of colored lights and the pilot rules:

FIRST SITUATION

Here the two colored lights visible to each will indicate their direct approach "head and head” toward each other. In this situation it is a standing rule that both shall direct their courses to starboard and pass on the portside of each other, each having previously given one blast of the whistle, except that when an ascending, steamer is approaching a descending steamer the descending steamer has the right of way. The necessary signals for passing shall be given as provided in paragraph 332.1.

SECOND SITUATION

In this situation the red light only will be visible to each. Both vessels are evidently passing to port of each other, which is rulable in this situation, each pilot having previously signified his intention by one blast of the whistle.

THIRD SITUATION

In this situation the green light only will be visible to each. They are therefore passing to starboard of each other, which is rulable in this situation, each pilot having previously signified his intention by two blasts of the whistle.

FOURTH SITUATION

In this situation one steamer is overtaking another steamer from some point within the angle of two points abaft the beams of the overtaken steamer. The overtaking steamer may pass on the starboard or portside of the steamer ahead after the necessary signals for passing have been given, with assent of the overtaken steamer, as prescribed in paragraph 332.8.

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In this situation two steamers are approaching each other at right angles or obliquely in such manner as to involve risk of collision, other than where one steamer is overtaking another.

The steamer which has the other on her own portside shall hold course and speed, and the other shall keep clear by crossing astern of the steamer that is holding course and speed, or, if necessary to do so, shall slacken her speed or stop or reverse.

Both steamers shall otherwise observe the provisions of paragraph 332.9, with respect to the signals for passing and the danger signal.

RULES FOR LIGHTS FOR CERTAIN CLASSES OF VESSELS ON WESTERN RIVERS 20

332.14 Lights for ferryboats.—The signal lights on ferryboats on waters flowing into the Gulf of Mexico and their tributaries shall be the same as those on all other steamboats on the same waters, except that double-end ferryboats shall carry a central range of clear, bright, white lights, showing all around the horizon, placed at equal altitudes forward and aft, also on the starboard side a green light, and on the port side a red light, of such character as to be visible on a dark night with a clear atmosphere at a distance of at least 2 miles, and so constructed as to show a uniform and unbroken light over an arc of the horizon of 10 points of the compass, and so fixed as to throw the light from right ahead to 2 points abaft the beam on their respective sides.

The green and red lights shall be fitted with inboard screens projecting at least 3 feet forward from the lights, so as to prevent them from being seen across the bow.

Officers in Charge, Marine Inspection, 27 in districts having ferryboats shall, whenever the safety of navigation may require, designate for each line of such boats a certain light, white or colored, which shall show all around the horizon, to designate and distinguish such lines from each other, which light shall be carried on a flagstaff amidships, 15 feet above the white range lights.

332.15 Lights for steamers having but one chimney.-All steamers having but one chimney, except ferryboats provided for in paragraph 26 Issued under the authority contained in Rules seven and twelve, R. S. 4233; 33 U. S. C. 316, 321. 27 For a definition of an Officer in Charge, Marine Inspection, see 46 C. F. R. 59.01 or $ 59.01 of the publication entitled "General Rules and Regulations for Vessel Inspection, Ocean and Coastwise."

332.14, navigating rivers whose waters flow into the Gulf of Mexico and their tributaries, and the Red River of the North, shall carry a green light on the starboard side and a red light on the port side, on brackets securely fastened to the outboard sides of the chimney, the lights to show both forward and abeam on their respective sides.

332.16 Lights for barges and canal boats in tow.—The lights for barges and canal boats when towed ahead or alongside of the steamer, as is customary upon rivers whose waters flow into the Gulf of Mexico, shall be as follows:

When one barge is towed by a steamer, and such barge is towed ahead, such barge shall have a green light on the starboard bow and a red light on the port bow. When such barge is towed alongside of the steamer, on the starboard side, such barge shall have a green light on the starboard bow. When such barge is towed alongside of a steamer, on the port side, such barge shall have a red light on the port bow. When two barges are towed alongside of a steamer, one on the starboard and one on the port side, the starboard barge shall carry a green light on the starboard bow and the port barge shall carry a red light on the port bow. When two or more barges are towed ahead, the green light shall be placed on the starboard bow of the starboard barge and a red light on the port bow of the port barge and at a distance of not less than 10 feet above the the surface of the water.

The colored side lights referred to in the foregoing rules must be fitted with inboard screens, so as to prevent them from being seen across the bow, and of such a character as to be visible on a dark night, with a clear atmosphere, at a distance of at least 2 miles, and so constructed as to show a uniform and unbroken light over an arc of the horizon of 10 points of the compass, and so fixed as to throw the light from right ahead to 2 points abaft the beam on either side. The minimum size of glass globes shall not be less than 5 inches in diameter and 5 inches high in the clear.

332.17 Lights for scows in tow.—All scows being towed by hawser behind steam vessels shall carry a regulation white light at each end of each scow (such lights to be carried not less than 8 feet above the surface of the water, and so as to show all around the horizon), except that when scows are massed in tiers, two or more abreast, each of the outside boats shall carry a white light on its outer bow; and the outside boats in the last tier shall each carry, in addition, a white light on the outer part of the stern.

332.18 Lights for rafts and other craft.-All coal boats, trading boats, produce boats, canal boats, oyster boats, fishing boats, and other watercraft, except as hereinafter otherwise provided, navigating any bay, harbor, or river, propelled by hand power, horsepower, or by the current of the river, or which shall be anchored or moored in or near the channel or fairway of any bay, harbor, or river, shall carry one white light forward, not less than 8 feet above the surface of the water.

Rafts propelled by hand power or by the current of the river, or which shall be anchored or moored in or near a channel or fairway, shall carry white lights, as follows:

Rafts of one crib and not more than two in length shall carry one white light. Rafts of three or more cribs in length and one crib in width shall carry one white light at each end of the raft.

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Rafts of more than one crib abreast shall carry one white light on each outside corner of the raft, making four lights in all.

The white light required by this section for rafts and other watercraft 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 1 mile. The lights for rafts shall be suspended from poles of such height that the light shall not be less than 8 feet above the surface of the water.

Rowing boats under oars shall have ready at hand a lantern showing a white light which shall be temporarily exhibited in sufficient time to prevent collision.

332.19 Distress signals.28_-(a) In the daytime.---(1) A gun fired at intervals of about a minute.

(2) The International Code signal of distress indicated by N. C.

(3) The distant signal, consisting of a square flag, having either above or below it a ball or anything resembling a ball.

(4) Rockets or shells as prescribed below for use at night.

(5) A continuous sounding with a steam whistle or any fog-signal apparatus.

(6) At night.-(1) A gun fired at intervals of about a minute.

(2) Flames on the vessel (as from a burning tar barrel, oil barrel, etc.).

(3) Rockets or shells, bursting in the air with a loud report and throwing stars of any color or description, fired one at a time at short intervals.

(4) A continuous sounding with a steam whistle or any fog-signal apparatus. (R. S. 4412; 46 U. S. C. 381.)

332.20 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.

332.21 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.

332.22 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.

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28 Recommended by the former Board of Supervising Inspectors and reaffirmed by the Commandant MOTORBOAT REGULATIONS 29

Part 25—Requirements for All Motorboats Except Those of Over 15 Gross Tons

Carrying Passengers for Hire

NAVIGATION LIGHTS

25.1-1 When carried and exhibited.—Every motorboat in all weathers from sunset to sunrise shall carry and exhibit the following lights when under way and during such time no other lights which may be mistaken for those prescribed shall be exhibited. No penalty is incurred by motorboats for a failure to carry lights between the hours of sunrise and sunset.

25.1-2 Classes A and 1.-Every motorboat of classes A and 1 shall carry the following lights:

(a) A bright white light aft to show all around the horizon.

(6) A combined lantern in the fore part of the vessel and lower than the white light aft, showing green to starboard and red to port, so fixed as to throw the light from right ahead to 2 points abaft the beam on their respective sides.

25.1–3 Classes 2 and 3.-Every motorboat of classes 2 and 3 shall carry the following lights:

(a) A bright white light in the fore part of the vessel as near the stem as practicable, so constructed as to show an unbroken light over an arc of the horizon of 20 points of the compass, so fixed as to throw the light 10 points on each side of the vessel; namely, from right ahead to 2 points abaft the beam on either side.

(6) A bright white light aft to show all around the horizon and higher than the white light forward.

(c) On the starboard side a green light so constructed as to show an unbroken light over an arc of the horizon of 10 points of the compass, so fixed as to throw the light from right ahead to 2 points abaft the beam on the starboard side. On the port side a red light so constructed as to show an unbroken light over an arc of the horizon of 10 points of the compass, so fixed as to throw the light from right ahead to 2 points abaft the beam on the port side. The said side lights shall be fitted with inboard screens of sufficient length and height or shall be mounted on cabin sides and so set as to prevent these lights from being seen across the bow.

25.1-4 Under sail and machinery.-All motorboats propelled by sail and machinery or by sail alone shall carry and exhibit the following lights:

(a) Motorboats of classes A and 1 when propelled by sail and machinery or by sail alone shall carry the white light prescribed by paragraph 25.1-2 (a) but not the combined lantern prescribed by 25.1–2 (6).

(6) Motorboats of classes 2 and 3 when propelled by sail and machinery or by sail alone shall carry the colored side lights prescribed by paragraph 25.1-3 (c) but not the white lights prescribed by paragraph 25.1-3 (a) and (6).

(©) In addition, motorboats of all classes when so propelled shall carry ready at hand a lantern or flashlight showing a white light which shall be exhibited in sufficient time to avert collision.

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20 Code of Federal Regulations, Title 46, Chapter I, Subchapter C. Issued under the authority contained in the Motorboat Act of 1940 (pp. 37-42).

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