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American Shoal Lt.

Key West Entr. Lt. Whis. Buoy

SI MARKS

GAMBLE PT.

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APALACHEE BAE

Cosgrove Shoal Lt.

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MOBILE BAY

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TWICA I.

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MISSISSIPPI SOUND.

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Mobile Entr Lt. Whis. Buoy to Shipl.Lt.

Chandeleur Lt.

to Mobile Entr. Lt. Whis. Buoy

Errol 1

Galveston North Jetty Lt.

Galveston (S.) Jetty Lt.

s. Galveston Bar Lr. Whis. Buoy

Pass a Loutre
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WAR DEPARTMENT RULES AND REGULATIONS GOVERNING THE

DISPLAY OF SIGNALS ON, AND THE OPERATION OF, ALL CRAFT and Accessories Working on Wrecks, Engaged in Dredging, Surveying, or Other Work of Improvement, and the Use and Navigation of the Waters in the Vicinity, in the Great Lakes and Their Connecting and Tributary Waters as far East as Montreal, the Red River of the North, and the Rivers Whose Waters Flow into the Gulf of Mexico, and their Tributaries

THE LAW

Section 7 of the River and Harbor Act of August 8, 1917, provides as follows:

That it shall be the duty of the Secretary of War to prescribe such regulations for the use, administration, and navigation of the navigable waters of the United States as in his judgment the public necessity may require for the protection of life and property, or of operations of the United States in channel improvement, covering all matters not specifically delegated by law to some other executive department. Such regulations shall be posted, in conspicuous and appropriate places, for the information of the public; and every person and every corporation which shall violate such regulations shall be deemed guilty of a misdemeanor and, on conviction thereof in any district court of the United States within whose territorial jurisdiction such offense may have been committed, shall be punished by a fine not exceeding $500, or by imprisonment (in the case of a natural person) not exceeding six months, in the discretion of the court.

In pursuance of the above-quoted law, the following regulations are hereby prescribed to govern the display of signals on, and the operation of, all craft and accessories working on wrecks, engaged in dredging, surveying, or other work of improvement, and the use and navigation of the waters in the vicinity, in the Great Lakes and their connecting and tributary waters as far east as Montreal, the Red River of the North, and the rivers whose waters flow into the Gulf of Mexico, and their tributaries. The designation "floating plant" as used herein includes dredges, derrick boats, snag boats, drill boats, pile drivers, maneuver boats, hydraulic graders, and survey boats.

THE REGULATIONS

1. Rule for signals to be displayed by a towing vessel when towing a submerged

or partly submerged object upon a hawser when no signals are displayed

upon the object which is towed. The vessel having the submerged object in tow shall display by day, where they can best be seen, two shapes, one above the other, not less than 6 feet apart, the lower shape to be carried not less than 10 feet above the deck houses. The shapes shall be in the form of a double frustrum of a cone, base to base, not less than 2 feet in diameter at the center nor less than 8 inches at the ends of the cones, and to be not less than 4 feet lengthwise from end to end, the upper shape to be painted in alternate horizontal stripes of black and white, 8 inches in width, and the lower shape to be painted a solid bright red.

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By night the towing vessel shall display the regular side lights, but in lieu of the regular white towing lights shall display four lights in a vertical position not less than 3 feet nor more than 6 feet apart, the upper and lower of such lights to be white, and the two middle lights to be red, all of such lights to be of the same character as is now prescribed for the regular towing lights. 2. Rule for steamers, derrick boats, lighters, or other types of vessels made fast

alongside a wreck, or moored over a wreck which is on the bottom or partly

submerged, or which may be drifting. Steamers, derrick boats, lighters, or other types of vessels made fast alongside a wreck, or moored over a wreck which is on the bottom or partly submerged, or which may be drifting, shall display by day two shapes of the same character and dimensions and displayed in the same manner as required by the foregoing rule, except that both the shapes shall be painted a solid bright red; but where more than one vessel is working under the above conditions the shapes need be displayed only from one vessel or each side of the wreck from which it can best be seen from all directions.

By night this situation shall be indicated by the display of a white light from the bow and stern of each outside vessel or lighter not less than 6 feet above the deck, and in addition thereto there shall be displayed in a position where they may best be seen from all directions two red lights carried in a vertical line not less than 3 feet nor more than 6 feet apart, and not less than 15 feet above the deck. 3. Rule for dredges which are held in stationary position by moorings or spuds.

Dredges which are held in stationary position by moorings or spuds shall display by day two red balls not less than 2 feet in diameter and carried in a vertical line not less than 3 feet nor more than 6 feet apart and at least 15 feet above the deck house and in such a position where they can best be seen from all directions. By night they shall display a white light at each corner, not less than 6 feet above the deck, and in addition thereto there shall be displayed in a position where they may best be seen from all directions two red lights carried in a vertical line not less than 3 feet nor more than 6 feet apart and not less than 15 feet above the deck. When scows are moored alongside a dredge in the foregoing situation they shall display a white light on each outboard corner not less than 6 feet above the deck. 4. Rule for self-propelling suction dredges underway with their suctions on

the bottom. Self-propelling suction dredges underway with their suction on the bottom shall display by day the same signals as are used to designate any steamer not under control; that is to say, two black balls not less than 2 feet in diameter and carried not less than 15 feet above the deck house and where they may best be seen from all directions.

By night they shall carry, in addition to the regular running lights, two red lights of the same character as the masthead light, in the same vertical plane and underneath the masthead light, the red lights to be not less than 3 feet nor more than 6 feet apart and the upper red light to be not less than 4 feet and not more than 6 feet below the white masthead light, and on or near the stern two red

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