Notice to Navigators: Gulf and Intracoastal Waterways

NOTICE TO MARINERS
GULF AND INTRACOASTAL WATERWAYS

LNM 41-21

SECTION I - SPECIAL NOTICES

This section contains information of special concern to the Mariner.

 

FL/LA - TEMPORARY ESTABLISHMENT OF LIGHTED BUOYS

On October 15, 2021 through April 15, 2022, SOFAR Oceans will temporarily establish 4 yellow lighted buoys in the Gulf of Mexico, in the following approximate positions:

27-28-08.06N 083-00-46.31W,

30-21-37.14N 086-29-07.36W,

28-41-59.02N 091-16-07.79W and

28-53-12.68N 090-21-17.49W.

The yellow buoys will show a flashing 2.5 second yellow light at night and each lighted buoy will be equipped with a GPS for location and tracking.

  

SECTION VII – GENERAL

This section contains information of general concern to the Mariners. Mariners are advised to use caution while transiting these areas.

 

MS - HORN ISLAND PASS - Dredge Operation – UPDATE

Continuing until approximately October 30, 2021, Hydraulic Dredge C.R. MCCASKILL and attendant plant are operating in the Horn Island Pass Channel. Work limits will be bound by the following approximate positions:

30-13-12.17N 088-30-34.53W,

30-13-07.18N 088-30-17.46W,

30-12-17.80N 088-31-03.21W and

30-12-12.80N 088-30-40.43W.

A combination of floating and submerged pipeline will be utilized to deposit dredged material to a disposal area bound by the following approximate positions:

30-13-44.75N 088-31-42.18W,

30-13-06.34N 088-31-17.27W,

30-12-23.67N 088-31-57.49W,

30-12-29.92N 088-34-47.37W and

30-13-08.62N 088-34-48.04W.

The proposed submerged pipeline corridor will be bound by the following approximate positions:

30-13-07.70N 088-32-46.94W, 30-12-25.94N 088-30-35.46W, 30-12-16.02N 088-30-37.02W and 30-12-30.30N 088-32-53.57W.

Staging Area for dredge pipeline and equipment will be bound by the following approximate positions: 30-21-05.13N 088-34-08.11W,

30-21-05.04N 088-33-45.02W,

30-20-44.33N 088-33-42.86W and

30-20-43.07N 088-34-08.90W.

Offshore Staging Area for dredge pipeline and equipment will be bound by the following approximate positions:

30-15-45.88N 088-29-51.20W,

30-15-40.59N 088-28-08.62W,

30-12-47.63N 088-28-25.11W and

30-13-01.24N 088-30-10.76W.

Operations will be conducted 24-hours a day, 7-days a week. The dredge, tugs and attendant plant will have all required U.S. Coast Guard lighting for night operations. Dredge and tugs will monitor VHF-FM Channels 11, 13 and 72. Mariners are urged to use extreme caution and transit the area at their slowest safe speed to create minimum wake after passing arrangements have been made.

 

LA/TX - GULF OF MEXICO - JOHNSON BAYOU - Cameron Meadows Marsh Creation Project – UPDATE

Commencing October 15, 2021 and continuing until December 31, 2021, Dredge OHIO and attendant plant will be conducting dredging operations for creation of Cameron Meadows Marsh Creation, in Johnson Bayou. This includes the placement of approximately 12,000 feet of submerged pipeline. The drawing attached as an enclosure to the Local Notice to Mariners, depicts actual placement with positions. Operations will be conducted 24-hours a day, 7-days a week. Great Lakes Dredge and Dock Company, LLC., will be utilizing the designated offshore borrow area as shown in the enclosed drawing. Great Lakes Dredge and Dock Company, LLC., will be removing approximately 1,830,000 cubic yards of material that will be transported via the submerged pipeline to a shoreline connection at the beach that will travel under Highway 82 and up to Johnson Bayou for marsh fill use. Mariners are urged to use extreme caution in the area and to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made. Great Lakes Dredge and Dock Company, LLC., understands that circumstances that warrant specific maritime precautions must be handled on a case-by-case basis in coordination with the local U. S. Coast Guard representatives. On-scene vessels will include Barge BARNEY, Survey Vessel GALVESTON BAY, Crew Boat EMMA KATE, Tug TRISTIN, Tug COASTAL DAWN and a Crane Barge. For any questions or concerns, mariners can contact Great Lakes Dredge and Dock Company, LLC., Site Manager Keith Pearse, at (904) 616-7290. Dredge OHIO and attendant plant will monitor VHF-FM Channels 13 and 16.

 

LA - GIWW - ALGIERS ALTERNATE ROUTE - MILE 3.7, SR 23 BELLE CHASSE HIGHWAY - Bridge Construction – UPDATE

The State Road 23 Belle Chasse Highway drawbridge across the Algiers Canal, GIWW, Mile 3.7, Algiers, Orleans Parish, LA., is being replaced with a fixed bridge that has a vertical clearance of 73 feet, above mean high water and a horizontal clearance of 125 feet, between bridge protection systems. The new bridge will be built down canal and will be parallel to the drawbridge. The drawbridge will be removed after completion of the new fixed bridge. Construction activities to install a main pier (MP1) on the north side of the canal will continue through April 2022. The drawbridge will continue to open according to regulations. During these construction activities, Traylor-Massman Joint Venture will have barges and towing vessels stationed on the north side of the canal. This equipment will be aligned parallel to the main channel and may protrude into the main channel by no more than 5 feet. The canal will periodically be closed to all vessel traffic, however; mariners will be provided with advance notice. The M/V KEITH JACOBSON will be on-scene each day to communicate with passing vessels to ensure safe passage through the bridge and construction sites. This includes moving barges or equipment if needed, to allow vessels to safely transit the construction area. Vessels passing through the bridge should contact the M/V KEITH JACOBSON via VHF-FM Channel 13, to obtain updated information on construction activities. Vessels or barges carrying oil or bulk dangerous cargoes regulated under 46 Code of Federal Regulations Subchapters D and O, should contact the M/V KEITH JACOBSON to secure any site hot work before passing through the construction site.

 

LA - GIWW - BAYOU LaFOURCHE - Channel Closure

All navigable waters of Bayou LaFourche north of the GIWW, from Larose to Lockport, are closed due to several hazards to navigation. Mariners are urged to conduct adequate voyage planning and find an alternate route.

 

LA - BAYOU PEROT - Submerged Obstruction

A piece of steel has been reported submerged approximately 2-inches below the waterline, in approximate position 29-39-37.0N 090-09-52.6W, in Bayou Perot. The submerged piece of steel is reportedly not marked. Mariners are urged to avoid this area.

 

LA - GIWW - MILE 30.0, WHL - MILE 35.0, WHL - Debris Removal Operations

Continuing until approximately November 10, 2021, Weeks Marine Clamshell Dredge J.C. DEVILLE is operating in the GIWW, between Mile 30.0, WHL and Mile 35.0, WHL. All the debris (plants and trees) removed from the area will be placed on the bank line of the channel. Operations will be conducted 24 hours a day, 7-days a week. The dredge will have all required U.S. Coast Guard lighting for night operations. The dredge and tugs will monitor VHF-FM Channels 13 and 16. Mariners are urged to use extreme caution and transit the area at their slowest safe speed to create minimum wake after passing arrangements have been made.

 

LA - MORGAN CITY TO PORT ALLEN - Submerged Construction Hazards - Vessel Restrictions – UPDATE

The Bayou Chene Floodgate is in the final phase of construction. The U.S. Coast Guard is continuing to implement the following restrictions to reduce the risk of recurring mishaps at this site. The width of the navigable channel has returned to 400 feet wide. Due to an ambundance of construction equipment on-scene and the vulnerable phase of the critical infrastructure, the Bayou Chene Floodgate remains closed to all nighttime commercial traffic between the hours of 7:00 p.m., until 7:00 a.m. Any tow configuration with a combined beam greater than or equal to 54 feet or a length greater than 600 feet are required to have an actively engaged, shadow assist tug when tranisiting through the construction site during daylight hours. To be in compliance with the requirement, tows must ensure the assist tug is ready and in position to provide immediate assistance throughout the entire transit through the floodgate. Vessels shall not meet or overtake when transiting through the construction site. All vessels intending to transit the Bayou Chene Floodgate area are required to check in with Vessel Traffic Service Berwick Bay before entering Bayou Chene. VTS Berwick Bay can be reached, at (985) 380-5370 or on VHF-FM Channel 11. All allisions with the Bayou Chene Floodgate structures must also be reported to VTS Berwick Bay and will be investigated by the U.S. Coast Guard. For further information on this advisory, mariners can contact U.S. Coast Guard Morgan City Waterways Management, at (985) 397-3289.

 

TX - NECHES RIVER - Dredge Operation

Continuing until October 21, 2021, the Dredge GENERAL EISENHOWER is conducting dredging operations on the Neches River at Energy Transfer/Sunoco docks in approximate position 30-00-37N 093-59-33W. The dredge will monitor VHF-FM Channel 13. The dredge can be reached by phone, at (409) 370-0364. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution through this area.

 

TX - FREEPORT ENTRANCE CHANNEL, JETTY CHANNEL - Dredge Operation

Commencing November 15, 2021 and continuing until March 5, 2022, Manson Construction Co., will be conducting dredging operations in the vicinity of the Freeport Harbor Entrance Channel and Jetty Channel. Disposal operations will be located at Ocean Dredged Material Disposal Site (ODMDS) No. 1. Turtle trawling may be performed in conjunction with dredging if directed by the USACE. Operations will be conducted 24-hours a day, 7- days a week. Dredge NEWPORT will monitor VHF-FM Channels 13, 16 and 66. Mariners are requested to transit the dredging areas at reduced speed and exercise caution in the vicinity of the dredge, when it is in the navigation channel.