lowed only two consecutive lockages if other vessels are waiting for lockage unless otherwise decided by the lockmaster. If other tows are waiting above and below a lock, lockages will be made both ways alternately whenever practicable.

(11) Mooring in locks:

(i) When in a lock, vessels and tows shall be moored where directed by the lockmaster by bow, stern, and spring lines to the snubbing posts or hooks provided for that purpose, and lines shall not be let go until the signal is given for the vessel to exit. Tying to the lock ladders is prohibited.

(ii) Mooring near the approaches to locks is prohibited except when the vessels or tows are awaiting lockage.

(12) Lock operating personnel: Vessels and tows using the locks may be required to furnish personnel to assist in locking through; however, the operation of the structure is the responsibility of the lockmaster, and personnel assisting in the lockage of the vessels and tows will follow the direction of the appropriate official on duty at the lock. No gates, valves or other accessories or controls will be operated unless under his direction.

(13) Waterway traffic data: To meet requirements for current data on waterway traffic and the trend of such traffic, all vessels transiting locks shall furnish such information as prescribed by the District Engineer. ENG Form 3102 for submitting this data can be obtained at any Federally operated lock.

(14) Lockage of rafts: Rafts shall be locked through as directed by the lockmaster. No raft will be locked that is not constructed in accordance with the requirements stated in paragraph (f) of this section. The person in charge of a raft desiring lockage shall register with the lockmaster immediately upon arriving at the lock and receive instructions for locking.

(e) Waterways: (1)-(4) [Reserved] (5)(i) [Reserved]

(ii) Algiers Canal between the Mississippi River and Bayou Barataria, La., and on Harvey Canal, Gulf Intracoastal Waterway, mile 0 to mile 6 WHL, tows 74 feet in width will be al

lowed. Tows in excess of 55 feet wide desiring to move over Algiers Canal or Harvey Canal will obtain clearance from the lockmaster at Algiers Lock or Harvey Lock, respectively, before entering the canal. Overwidth tows will report clearing Algiers or Harvey Canal to the respective lockmaster and will rearrange tows to conform to prescribed dimensions immediately upon leaving the canal. The lockmaster will withhold permission for additional tows over 55 feet wide until all previously authorized tows moving in the opposite direction have cleared the waterway.

(iii)-(vi) [Reserved]

(vii) Vessels or tows shall not navigate through a drawbridge until the movable span is fully opened.

(6) Projections from vessels: Vessels or tows carrying a deck load which overhangs or projects over the side, or whose rigging projects over the side, SO as to endanger passing vessels, wharves, or other property, shall not enter or pass through any of the narrow parts of the waterway without prior approval of the District Engi

neer.

(7) Meeting and passing: Passing vessels shall give the proper signals and pass in accordance with the Federal Rules of the Road. At certain intersections where strong currents may be encountered, sailing directions may be issued through navigation bulletins or signs posted on each side of the intersection.

(f) Rafts: The navigation regulations in this paragraph shall apply fully to the movement of rafts.

(1) Rafts will be permitted to navigate a waterway only if properly and securely assembled. Each raft shall be so secured as to prevent the loss or sinking of logs.

(2) All rafts shall carry sufficient men to enable them to be managed properly. It will be the responsibility of the owner to remove logs from the waterway that have broken loose from the raft.

(3) Building, assembling, or breaking up of a raft within a waterway may be permitted; however, the work must be done in an area that will not restrict the use of the waterway by other

400.8 and Mile 441.5, respectively, west of Harvey Lock, La., on the Gulf Intracoastal Waterway, and navigation of the tributary Colorado River Channel in the vicinity of said locks.

(b) Definitions. The term "current" means the velocity of flow of water in the river. It is expressed in statute miles per hour. The term "head differential" means the difference measured in feet between the water level in the river and that in the waterway when the floodgates or lock gates are closed. The term "Lockmaster" means the official in charge of the floodgates or locks.

(c) Operation of floodgates and locks (1) Unlimited passage. The floodgates and locks shall be opened for the passage of single vessels and towboats with single or multiple

barges when the current in the river is less than 1.5 miles per hour and the head differential is less than 0.7 foot. When the head differential is less than 0.7 foot, the Colorado River Locks shall normally be operated as floodgates, using only the riverside gate of each lock.

(2) Limited passage. When the current in either river exceeds 1.5 miles per hour or the head differential at the Brazos River Floodgates is between the limits of 0.7 foot and 1.8 feet, both inclusive, passage shall be afforded only for single vessels or towboats with single barges. When two barges are rigidly assembled abreast of each other and the combined width of both together is 55 feet or less, they shall be considered as one barge. Each section of an integrated barge shall be considered as one barge except, when it is necessary to attach a rake section to a single intermediate section to facilitate passage, the two sections shall be considered as one barge. It shall be the responsibility of the master, pilot or other person in charge of a vessel to determine whether a safe passage can be effected, giving due consideration to the vessel's power and maneuverability, and the prevailing current velocity, head differential, weather and visibility. If conditions are not favora

ble, passage shall be delayed until conditions improve and a safe crossing is assured.

(3) Gate closures. The Brazos River Floodgates shall be closed to navigation when the head differential exceeds 1.8 feet. The Colorado River Locks shall be closed to navigation when the current in the river exceeds a critical velocity as determined by the District Engineer, U.S. Army Engineer District, Galveston, Tex. The Brazos River Floodgates or the Colorado River Locks shall be closed to navigation when in the opinion of said District Engineer it is required for the protection of life and property, or it is to the advantage of the Government to permit uninterrupted emergency or maintenance operations, including dredging.

(4) Mooring facilities. Mooring facilities located on both banks of the Gulf

Intracoastal Waterway on the approaches to the floodgates and locks are for the mooring of vessels when the floodgates or locks are closed to navigation or tows are limited to single barges. Vessels awaiting passage shall be moored parallel to the bank and as close to the bank as possible. Barges shall be moored fore and aft with two lines, each to a separate mooring facility. Beaching of vessels in lieu of mooring them is prohibited. The mooring facilities are numbered and vessels making fast to them shall notify the Lockmaster giving the number of each facility being used.

(5) [Reserved]

(6) Communication—(i) Radio. The floodgates and locks are equipped with short wave radio equipment transmitting and receiving on 2738 kilocycles. Call letters for the floodgates are WUI 411 and for the locks are WUI 412.

(ii) Telephone. The floodgates and locks are equipped with telephone facilities. The floodgates may be reached by phoning Freeport, Tex., Area Code 713, phone 233-1251; the locks may be reached by phoning Bay City, Tex., Area Code 713, phone 8637842.

(7) Arrival posts. Arrival posts 10 feet high and 10 inches in diameter have been established on the approaches to the locks and floodgates. They are painted with alternate horizontal bands of red and white 3 inches wide. Arrival at the floodgates or locks shall be determined as provided in paragraph (d)(4) of § 207.180.

(d) Navigation of the Colorado River Channel-(1) Traffic signals. (i) Light and sound signals directed both upstream and downstream on the Colorado River are mounted on top of a galvanized skeleton steel tower 85 feet high located on the northeast point of land at the Gulf Intracoastal Waterway crossing of the river. They will be operated from the control house of the East Lock of the Colorado River Locks to direct the interchange of traffic in the Colorado River and the Gulf Intracoastal Waterway.

(ii) Vessels navigating the Colorado River and desiring passage either upstream or downstream through the crossing, or into the crossing and through a lock into the Gulf Intracoastal Waterway, shall give notice to the Lockmaster by two long and distinct blasts of a whistle or horn when within a distance of not more than one-half mile nor less than one-fourth mile from the Gulf Intracoastal Waterway crossing. When the locks and the crossing are clear of vessels, the Lockmaster shall reply by two long and distinct blasts of a whistle or horn and display a green light from the signal tower indicating that the vessel in the river may proceed across the crossing or into the main stem of the Gulf Intracoastal Waterway either eastbound or westbound. When there are vessels in the river crossing or in the locks, the Lockmaster shall reply by four or more short blasts of a whistle or horn (danger signal) and display a red light from the signal tower indicating the vessel in the river shall wait at least a quarter of a mile from the crossing for clearance. When the locks and crossing are clear of vessels, the lockmaster shall indicate to the waiting vessel by two long and distinct

blasts of a whistle or horn and display of a green light from the signal tower indicating that the vessel may proceed across the crossing or into the main stem of the Gulf Intracoastal Waterway either eastbound or westbound. During periods when the red light may be obscured by fog, mist, or rain, an audible signal consisting of a long blast followed by a short blast of a whistle or horn, repeated every 30 seconds, shall be sounded from the signal tower as an adjunct to the red light.

(2) Signs. Large signs with silver reflective background and stop sign red letters are erected one-fourth mile upstream and downstream from the Gulf Intracoastal Waterway on the Colorado River. The legend states "DO NOT PROCEED BEYOND THIS POINT WHEN SIGNAL TOWER LIGHT IS RED." These signs must be obeyed.

NOTE: The foregoing regulations are supplementary to the regulations in § 207.180. [31 FR 15310, Dec. 7, 1966, as amended at 34 FR 15797, Oct. 14, 1969]

(2) The regulations in this section shall be enforced by the Chief of Naval Air Training, U.S. Naval Air Station, Corpus Christi, Tex., and such agencies as he may designate.

[43 FR 30054, July 13, 1978]

§ 207.200 Mississippi River below mouth of Ohio River, including South and Southwest Passes; use, administration, and navigation.

(a) Mississippi River bank protection works provided by United States. Except in case of great emergency, no vessel or craft shall anchor over revetted banks of the river, and no floating plant other than launches and similar small craft shall land against banks protected by revetment except at regular commercial landings. In all cases, every precaution to avoid damage to the revetment works shall be exercised. The construction of log rafts along mattressed or paved banks or the tying up and landing of log rafts against such banks shall be performed in such a manner as to cause damage to the mattress work or bank paving. Generally, mattress work extends out into the river 600 feet from the low water line. Information as to the location of revetted areas may be obtained from, and will be published from time to time by, the District Engineers, Corps of Engineers, New Orleans, Louisiana, Vicksburg, Mississippi, and Memphis, Tennessee, and the President, Mississippi River Commission, Vicksburg, Mississippi.

no

(b) Mississippi River below Baton Rouge, La., including South and Southwest Passes-(1) Supervision. The use, administration, and navigation of the waterways to which this paragraph applies shall be under the supervision of the District Engineer, Corps of Engineers, New Orleans, Louisiana.

(2) (3) [Reserved]

(4) Cable and pipeline crossings. Any cable or pipeline crossing or extending into the waterways shall be marked by large signs with 12-inch black letters on a white background readable from the waterway side, placed on each side of the river near the point where the cable or pipeline enters the water, and at a sufficient height to be readable

above any obstructions normally to be expected at the locality such as weeds or moored vessels.

(5) Marine accidents. Masters, mates, pilots, owners, or other persons using the waterway to which this paragraph applies shall notify the District Engineer by the most expeditious means available of all marine accidents, such as fire, collision, sinking, or stranding, where there is possible obstruction of the channel or interference with navigation or where damage to Government property is involved, furnishing a clear statement as to the name, address, and ownership of the vessel or vessels involved, the time and place, and the action taken. In all cases, the owner of the sunken vessel shall take immediate steps properly to mark the wreck.

(c)-(e) [Reserved]

[15 FR 3325, May 30, 1950, as amended at 17 FR 6594, July 18, 1952; 27 FR 3166, Apr. 3, 1962; 33 FR 10456, July 23, 1968; 42 FR 51773, Sept. 29, 1977; 42 FR 57961, 57962, Nov. 7, 1977]

§ 207.249 Ouachita and Black Rivers, Arkansas and Louisiana, mile 0.0 to mile 237.0 (Arkansas-Louisiana line) above the mouth of the Black River; use, administration, and navigation.

(a) Commercial statistics. (1) As required by section 11 of the River and Harbor Act of September 22, 1922 (42 Stat. 1043; 33 U.S.C. 555), owners, agents, masters, and clerks of vessels plying upon the waterways to which this section applies shall furnish information on such activities for statistical purposes.

(2) The Waterway Traffic Report, ENG Form 3102, is prescribed for collecting information and data on vessels transiting locks and regulated canals. Copies of this form may be obtained free of charge from the District Engineer or the lockmaster at each lock.

(3) A report on the prescribed form shall be made and presented to the lockmaster at any of the federally operated locks for each trip made. Where no federally operated lock is passed, the report shall be mailed promptly to the District Engineer. Upon receipt of a written request from