Great Lakes Dredge & Dock Other service
Mechanical Dredging
Three of the largest mechanical clamshell dredges in the U.S. plus a barge-mounted Liebherr 996 excavator for channel, port, demolition and pipeline work.
Description
GLDD operates three of the largest mechanical clamshell dredges in the United States – New York, G.L. 54 and No. 58 – as well as a barge-mounted Liebherr 996 hydraulic excavator, all on load-line certified spud barges. Material is loaded into scows from GLDD's material transport barge fleet.
Key features
- Bucket sizes from 12 to 50 yd³
- New York: 12 to 25 yd³ (11 to 22.9 m³) buckets
- G.L. 54: 12 to 50 yd³ (9 to 38 m³) buckets; No. 58: 20 to 50 yd³ (15 to 38 m³) buckets
- Dig depths to 150 ft (G.L. 54 and No. 58)
Applications
- Navigation channel and port improvements
- Maintenance dredging
- Demolition, pipeline excavation and burial
- Slope revetment
Specifications
| New York bucket size | 12 to 25 yd³ (11 to 22.9 m³) |
|---|---|
| G.L. 54 bucket size | 12 to 50 yd³ (9 to 38 m³) |
| No. 58 bucket size | 20 to 50 yd³ (15 to 38 m³) |
| Max dig depth | 150 ft |
More from Great Lakes Dredge & Dock
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- Trailing Suction Hopper Dredging
- Cutter Suction Dredging
- Rivers, Lakes & Reservoirs Dredging
- Booster Pumping
- Subaqueous Drilling & Blasting (Drillboat Apache)
- Support Fleet: Tugs, Workboats, Multicats & Auxiliary Vessels
- Channel & Port Maintenance and Deepening
- Coastal Protection & Restoration
- Land Reclamation
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Seasonal and transient dockage and moorings at the Crosby Yacht Yard marina in Osterville, Cape Cod, with a fuel dock on site.
Repair & Overhaul
Inboard Propeller Repair
Inboard propeller reconditioning to ISO Class 1 tolerance (Class S on request), with every inboard propeller dynamically balanced; also surfacing, pod-drive and outboard propellers.