USACE DREDGE McFARLAND

Deep-draft hopper dredge

USACE Philadelphia District
Published Feb. 22, 2023
The McFarland, a deep-draft hopper dredge owned and operated by USACE Philadelphia District, conducted urgent dredging for 62 days on the Southwest Pass of the Mississippi River starting in late March of 2015. The dredge was called upon because high stages impacted navigation along the Mississippi River.

The McFarland, a deep-draft hopper dredge owned and operated by USACE Philadelphia District, conducted urgent dredging for 62 days on the Southwest Pass of the Mississippi River starting in late March of 2015. The dredge was called upon because high stages impacted navigation along the Mississippi River.

The McFarland, a deep-draft hopper dredge owned and operated by USACE Philadelphia District, conducted urgent dredging for 62 days on the Southwest Pass of the Mississippi River starting in late March of 2015. The dredge was called upon because high stages impacted navigation along the Mississippi River.

The McFarland, a deep-draft hopper dredge owned and operated by USACE Philadelphia District, conducted urgent dredging for 62 days on the Southwest Pass of the Mississippi River starting in late March of 2015. The dredge was called upon because high stages impacted navigation along the Mississippi River.

The McFarland, a deep-draft hopper dredge owned and operated by USACE Philadelphia District, conducted urgent dredging for 62 days on the Southwest Pass of the Mississippi River starting in late March of 2015. The dredge was called upon because high stages impacted navigation along the Mississippi River.

The McFarland, a deep-draft hopper dredge owned and operated by USACE Philadelphia District, conducted urgent dredging for 62 days on the Southwest Pass of the Mississippi River starting in late March of 2015. The dredge was called upon because high stages impacted navigation along the Mississippi River.

The McFarland, a deep-draft hopper dredge owned and operated by USACE Philadelphia District, conducted urgent dredging for 62 days on the Southwest Pass of the Mississippi River starting in late March of 2015. The dredge was called upon because high stages impacted navigation along the Mississippi River.

The McFarland, a deep-draft hopper dredge owned and operated by USACE Philadelphia District, conducted urgent dredging for 62 days on the Southwest Pass of the Mississippi River starting in late March of 2015. The dredge was called upon because high stages impacted navigation along the Mississippi River.

The Dredge McFarland, one of four ocean-going hopper dredges owned and operated by the U.S. Army Corps of Engineers, conducted urgent dredging in Morehead City, N.C. in March and April of 2018. The McFarland is based out of the USACE Philadelphia District.

The Dredge McFarland, one of four ocean-going hopper dredges owned and operated by the U.S. Army Corps of Engineers, conducted urgent dredging in Morehead City, N.C. in March and April of 2018. The McFarland is based out of the USACE Philadelphia District.

The Dredge McFarland, based out of Fort Mifflin in Philadelphia,  worked on an emergency dredging mission in the Southwest Pass of the Mississippi River from Feb. 4 through March 7, 2019.  Since 2010, the McFarland has operated in a Ready Reserve status meaning it can be activated for emergency operations if private industry is unable to respond to a dredging project.

The Dredge McFarland, based out of Fort Mifflin in Philadelphia, worked on an emergency dredging mission in the Southwest Pass of the Mississippi River from Feb. 4 through March 7, 2019. Since 2010, the McFarland has operated in a Ready Reserve status meaning it can be activated for emergency operations if private industry is unable to respond to a dredging project.

The Dredge McFarland was featured on the cover of Building Strong: Serving the Nation and the Armed Forces publication. In the photo, the "Mac" is clearing shoals from the Southwest Pass of the Mississippi River to keep maritime commerce free flowing.

The Dredge McFarland was featured on the cover of Building Strong: Serving the Nation and the Armed Forces publication. In the photo, the "Mac" is clearing shoals from the Southwest Pass of the Mississippi River to keep maritime commerce free flowing.

​ABOUT THE McFARLAND: One of four oceangoing hopper dredges owned and operated by the U.S. Army Corps of Engineers as part  the Corps’ "minimum fleet" for national security and safe navigation, the McFarland is the only dredge in the world with triple capability for direct pumpout, bottom discharge and sidecasting or boom discharge. Designed by the Corps' Marine Design Center, it was built in April 1967. Its name honors the late Arthur McFarland, a Corps of Engineers authority on dredging. The McFarland has a twofold mission: 1) Emergency and national defense dredging — as required and on short notice — anywhere in the world. 2) Planned dredging tests in the Delaware River and Bay

DREDGE McFARLAND STATUS: The Dredge McFARLAND has been in the shipyard in Norfolk, VA for repairs and is expected to return to her home port in Philadelphia in the Spring of 2023. 

HOW IT WORKS:  Dredging is accomplished by a dragarm on each side of the ship with a draghead at each end. As the ship navigates the channel with its dredging pumps engaged, the dragheads are lowered to the channel bottom. Like vacuum cleaners, they pull the dredged material into the ship's hoppers.

The McFarland can then discharge the material any of three ways:

  1. As a conventional hopper dredge with bottom discharge into deep water.
  2. As a sidecaster discharging dredged material aside the channel.
  3. As a pipeline dredge pumping material into disposal areas or through a direct ship-to-shore pipeline to confined upland areas.

WHAT IT CAN DO:  The McFarland offers a degree of performance and flexibility unmatched by any other dredge: It can handle a variety of materials including silt, sand, clay, shell and mixtures, thanks to these features:

  • High-powered pumps, large single open-hopper design amidships, and hopper distribution system with retention capability for efficient handling of fine materials
  • It can dredge year-round in any environment, working around the clock while on assignment.
  •  Its average removal rate in a typical year (140 days) is 1.5 to 2 million cubic yards — enough dredged material to fill the area of a football field 900 to 1,200 feet high.

ABOUT THE CREW: The McFarland is operated by a civilian crew of about 45.  Many of the members, including all the deck and engine room officers, hold U.S. Coast Guard licenses.  Certified as an oceangoing vessel, it undergoes regular annual safety inspections by the U.S. Coast Guard and the American Bureau of Shipping.