TRAILING SUCTION HOPPER DREDGES

Hopper dredges are designed to vacuum material from the sea floor through drag arms that load the material into the hold of the vessel. The cargo of mud, or sand, can then be transported to either an ocean disposal site, where the material is dropped to the bottom through openings in the bottom of the hull, or at an upland site such as a beach, or reclamation, where the material is pumped ashore by the ship. This method is most suited when excavating loose material from open areas for delivery to a distant disposal location. These vessels are generally certified to sail in coastal or ocean waters and are suited for working in rougher sea conditions beyond those suitable for other dredging plants.

ELLIS ISLAND

U.S. Coastwise Qualified


Length: 480 ft (146.3 m)
Breadth: 92 ft (28 m)
Depth: 36 ft (11 m)
Draft: 30 ft (9.2 m)
Dredging Depth: 122 ft (37.2 m)
Suction Diameter: 2 @ 36 in (914.4 mm)
Discharge Diameter: 34 in (863.6 mm)
Hopper Capacity: 14,800 yd³
Propulsion Power: 13,404 hp (9,995.4 kW)
Dredge Pump Power: 10,000 hp (7,457 kW)
Total Installed Power: 28,625 hp (21345.7 kW)
+ Dimensions
Length: 480 ft (146.3 m)
Breadth: 92 ft (28 m)
Depth: 36 ft (11 m)
Draft: 30 ft (9.2 m)
+ Operating Parameters
Dredging Depth: 122 ft (37.2 m)
Suction Diameter: 2 @ 36 in (914.4 mm)
Discharge Diameter: 34 in (863.6 mm)
Hopper Capacity: 14,800 yd³
+ Machinery and Power
Propulsion Power: 13,404 hp (9,995.4 kW)
Dredge Pump Power: 10,000 hp (7,457 kW)
Total Installed Power: 28,625 hp (21345.7 kW)
Hopper Dredges

LIBERTY ISLAND

U.S. Coastwise Qualified

Length: 325 ft (99.1 m)
Breadth: 59 ft (18 m)
Depth: 31 ft (9.4 m)
Draft: 27.5 ft (8.4 m)
Dredging Depth: 108 ft (32.9 m)
Suction Diameter: 2 @ 31.5 in (800 mm)
Discharge Diameter: 30 in (762 mm)
Hopper Capacity: 6,540 yd³ (5,003 m³)
Propulsion Power: 9,920 hp (7,400 kW)
Dredge Pump Power: 8,200 hp (6,117 kW)
Total Installed Power: 15,566 hp (11,612 kW)
+ Dimensions
Length: 325 ft (99.1 m)
Breadth: 59 ft (18 m)
Depth: 31 ft (9.4 m)
Draft: 27.5 ft (8.4 m)
+ Operating Parameters
Dredging Depth: 108 ft (32.9 m)
Suction Diameter: 2 @ 31.5 in (800 mm)
Discharge Diameter: 30 in (762 mm)
Hopper Capacity: 6,540 yd³ (5,003 m³)
+ Machinery and Power
Propulsion Power: 9,920 hp (7,400 kW)
Dredge Pump Power: 8,200 hp (6,117 kW)
Total Installed Power: 15,566 hp (11,612 kW)
Hopper Dredges

TERRAPIN ISLAND

U.S. Coastwise Qualified

Length 315.6 ft (96.2 m)
Breadth 68.4 ft (20.8 m)
Depth 24.2 ft (7.4 m)
Draft 22.5 ft (6.9 m)
Dredging Depth: 80 ft (24.4 m)
Suction Diameter: 2 @ 33.5 in (851 mm)
Discharge Diameter: 33.5 in (851 mm)
Hopper Capacity: 6,400 yd³ (4,893 m³)
Propulsion Power:  7,453 hp (5,560 kW)
Dredge Pump Power: 2,800 hp (2,089 kW)
Total Installed Power: 15,206 hp (11,344 kW)
+ Dimensions
Length 315.6 ft (96.2 m)
Breadth 68.4 ft (20.8 m)
Depth 24.2 ft (7.4 m)
Draft 22.5 ft (6.9 m)
+ Operating Parameters
Dredging Depth: 80 ft (24.4 m)
Suction Diameter: 2 @ 33.5 in (851 mm)
Discharge Diameter: 33.5 in (851 mm)
Hopper Capacity: 6,400 yd³ (4,893 m³)
+ Machinery and Power
Propulsion Power:  7,453 hp (5,560 kW)
Dredge Pump Power: 2,800 hp (2,089 kW)
Total Installed Power: 15,206 hp (11,344 kW)
Hopper Dredges

DODGE ISLAND

U.S. Coastwise Qualified

Length: 281 ft (85.6 m)
Breadth: 53 ft (16.2 m)
Depth: 21.5 ft (6.6 m)
Draft Light: 9.5 ft (2.9 m)
Draft Loaded: 19.65 ft (6.0 m)
Suction Diameter: 2 @ 27 in (686 mm)
Discharge Diameter: 24 in (610 mm)
Dredging Depth: 70 ft (21.3 m)
Hopper Capacity: 3,600 yd³ (2,754 m³)
Propulsion Power: 4,350 hp (3,245 kW)
Dredge Pump Power 3,000 hp (2,238 kW)
Total Installed Power: 10,929 hp (8,153 kW)
+ Dimensions
Length: 281 ft (85.6 m)
Breadth: 53 ft (16.2 m)
Depth: 21.5 ft (6.6 m)
Draft Light: 9.5 ft (2.9 m)
Draft Loaded: 19.65 ft (6.0 m)
+ Operating Parameters
Suction Diameter: 2 @ 27 in (686 mm)
Discharge Diameter: 24 in (610 mm)
Dredging Depth: 70 ft (21.3 m)
Hopper Capacity: 3,600 yd³ (2,754 m³)
+ Machinery & Power
Propulsion Power: 4,350 hp (3,245 kW)
Dredge Pump Power 3,000 hp (2,238 kW)
Total Installed Power: 10,929 hp (8,153 kW)
Hopper Dredges

PADRE ISLAND

U.S. Coastwise Qualified

Length: 281 ft (85.6 m)
Breadth: 53 ft (16.2 m)
Depth: 21.5 ft (6.6 m)
Draft Light: 9.5 ft (2.9 m)
Draft Loaded: 19.65 ft (6.0 m)
Dredging Depth: 70 ft (21.3 m)
Suction Diameter: 2 @ 27 in (686 mm)
Discharge Diameter: 24 in (610 mm)
Hopper Capacity: 3,600 yd³ (2,754 m³)
Propulsion Power: 3,000 hp (2,238 kW)
Dredge Pump Power 3,500 hp (2,611 kW)
Total Installed Power: 9,395 hp (7,009 kW)
+ Dimensions
Length: 281 ft (85.6 m)
Breadth: 53 ft (16.2 m)
Depth: 21.5 ft (6.6 m)
Draft Light: 9.5 ft (2.9 m)
Draft Loaded: 19.65 ft (6.0 m)
+ Operating Parameters
Dredging Depth: 70 ft (21.3 m)
Suction Diameter: 2 @ 27 in (686 mm)
Discharge Diameter: 24 in (610 mm)
Hopper Capacity: 3,600 yd³ (2,754 m³)
+ Machinery & Power
Propulsion Power: 3,000 hp (2,238 kW)
Dredge Pump Power 3,500 hp (2,611 kW)
Total Installed Power: 9,395 hp (7,009 kW)
Hopper Dredges

SUGAR ISLAND

Length: 281 ft (85.6 m)
Breadth: 53 ft (16.2 m)
Depth: 21.5 ft (6.6 m)
Draft Light: 9.5 ft (2.9 m)
Draft Loaded: 19.65 ft (6.0 m)
Dredging Depth: 70 ft (21.3 m)
Suction Diameter: 2 @ 27 in (686 mm)
Discharge Diameter: 24 in (610 mm)
Hopper Capacity: 3,600 yd³ (2,754 m³)
Propulsion Power: 4,350 hp (3,245 kW)
Dredge Pump Power 1,700 hp (1,268 kW)
Total Installed Power: 9,395 hp (7,009 kW)
+ Dimensions
Length: 281 ft (85.6 m)
Breadth: 53 ft (16.2 m)
Depth: 21.5 ft (6.6 m)
Draft Light: 9.5 ft (2.9 m)
Draft Loaded: 19.65 ft (6.0 m)
+ Operating Parameters
Dredging Depth: 70 ft (21.3 m)
Suction Diameter: 2 @ 27 in (686 mm)
Discharge Diameter: 24 in (610 mm)
Hopper Capacity: 3,600 yd³ (2,754 m³)
+ Machinery & Power
Propulsion Power: 4,350 hp (3,245 kW)
Dredge Pump Power 1,700 hp (1,268 kW)
Total Installed Power: 9,395 hp (7,009 kW)