GLDD’s Critical Role in Realizing Offshore Energy’s Potential

Subsea rock installation is the most effective means of providing long-term scour protection. It is required to stabilize the sea floor around marine structures from the momentous kinetic energy of the ocean eroding away critical structural foundation base. With the first, and only, Jones-Act compliant subsea rock installation vessel under construction at the Philly Shipyard in Philadelphia, GLDD is helping to strengthen the foundations for U.S. offshore energies.

Among its leading-edge technologies to better protect the environment, the vessel will have EPA Tier 4-compliant engines, a battery energy storage system to shave peak loads, and plug-in capability to obtain shore power while loading. Additionally, it will be able to run on biofuel, reducing the ship’s CO2, SOx and overall hydrocarbon footprint and will be equipped with active emissions control technology to mitigate NOx emissions.

Acadia specification:

Main dimensions of the vessel are:

• Loa 140.5 m / 461 ft
• Lpp 134.9 m / 442 ft
• Beam (moulded) 34.1 m / 112 ft
• Depth (main deck) 10.7 m / 35 ft
• Draught (operational) 7.0 m / 23 ft
• Service speed 12 kn
• Installed power 2 x 3,150 kW – 2 x 2,250 kW
• Propulsion thrusters 2 x 2,500 kW
• Retractable thruster 2 x 1,200 kW
• Tunnel thrusters (fwd) 2 x 900 kW
• Positioning system DP 2
• Class ABS
• Rock hold capacity 20,000 t
• Complement 45 P

Founded in Illinois in 1890, GLDD has a long history with Chicago’s shore infrastructure and river lock system. The company now operates on every domestic coastline and throughout many inland U.S. waterways, and has operated in several foreign markets, throughout the Middle East, Latin America, and other regions around the globe. In addition, GLDD has a fleet of smaller vessels that specialize in dredging challenging shallow water environments, such as lakes, reservoirs, rivers, and inland channels.

Since its founding, GLDD has been a leader in the building and maintenance of the nation’s navigation system, the protection of shorelines, the restoration of sensitive habitats, and the creation of critical aquatic infrastructure. We are committed to delivering innovative and high-quality workmanship to our clients while executing every project with a focus on safety and environmental protection and enhancement.

• Great Lake Dredge & Dock Company History | GLDD

Port of New York and New Jersey harbor deepening program

The county, in partnership with local municipalities, has embarked on a plan to restore and preserve the fragile coastline while establishing a strong defense against increasingly powerful storms to protect property and infrastructure in the coastal communities.

• Completed in 2065
• Located in the U.S.
• text here

Port of New York and New Jersey harbor deepening program

The county, in partnership with local municipalities, has embarked on a plan to restore and preserve the fragile coastline while establishing a strong defense against increasingly powerful storms to protect property and infrastructure in the coastal communities.

• Completed in 2065
• Located in the U.S.
• text here