1,500 m3 Trailing Suction Split Hopper Dredger

1,500 m3 New Build Trailing Suction Split Hopper Dredger

Principal Dimensions and Characteristics
Classification Society/Notation: BV (Bureau Veritas),BV I ✠Hull * MACH Split Hopper
Dredger, Unrestricted Navigation, dredging over 15
miles from shore.
Length Over All: 77.70 m 255 feet
Length Between Perpendiculars: 70.40 m 231 feet
Beam: 14.00 m 46 feet
Depth: 4.80 m 16 feet
Draft (laden): 4.29 m 14 feet
Gross Tonnage: 1,573 tonnes
Full Load Displacement: 3,834 tonnes
Dead Weight: 2,500 tonnes
Hopper Capacity: 1,500 cubic meters 1,962 cubic yards
Dredging Depth (up to): 30 m 98 feet
Free Load Speed: 12 knots
Fresh Water Capacity: 48 cubic meters 63 cubic yards
Oil Capacity: 27 cubic meters 35 cubic yards
Fuel (GO): 257 cubic meters 336 cubic yards
Other Tanks: 25 cubic meters 33 cubic yards
Accommodation: 14 persons
Machinery & Propulsion
Main Engines (2):
Make/Model: CAT / 3512C-HD
Power @ 1,500 RPM: 1,408 kW x 2 1,888 hp x 2
Propulsion:
Propellers: 2 x AZIMUTHAL PRROPELLORS SCHOTTEL SRP1012C
Bow Thruster:
Type: Hydraulic
Power: 250 kW 335 hp
Main Generators:
Make/Model: LEROY SOMMER (1,540 kVA)
Power: 1,232 kW 1,652 hp
Auxiliary Engine:
Make/Model: CATERPILLAR / C18
Power @ 1,500 RPM: 466 kW 625 hp
Generator:
Make/Model: LEROY SOMMER (562 kVA) Capacity
Power @ 1,500 RPM: 438 kW 587 hp
Generator Set - Port Services:
Make/Model: CATERPILLAR / C4.4
Power: 86 kW 115 hp
Make/Model: LEROY SOMER (107 kVA - 400 V - 50 Hz)
Deck Machinery
Deck Crane:
Make/Model: GUERRA / M380 24A5,
Capacity: 2 tons at 13,6 outreach
Winches:
Make/Model: MAN / H / H / 34 - S / 1
Type: Three (3) Ibercisa Hydraulic Mooring Winches
Rescue & Salvage:
Make/Model: NARWHAL / SV 420
Power: 30 kW 40 hp
Radial Davit Rescue Boat:
Make/Model: FERRI / SERIE 1872, TN 3919
Type: 0.9 T at 4.4 m (14 ft.)
Dredging Equipment
Dredge Pump:
Make/Model: HRLD / 123-30-70
Type: Single walled
Power @ 413 RPM: 965 kW 1,294 hp


Driven by an electric AC asynchronous motor via frequency converter.
Jet Water Pump:
Make/Model: NIJHUIS / HGT1-350.500
Type: Centrifugal
Power: 500 kW 671 hp
Jet Water Nozzles:: 48
Dredging Capacity: 1,100 cubic meters/hr 1,439 cubic yards/hr


For Unloading Condition: 2,400 cubic meters (3,139 cubic yards) @ 6 bar
Driven by an electric AC asynchronous motor via frequency converter.
Dredge Pump Powering: ABB 4 poles asynchronous electric motor M3LP40LC4
driven by ABB frequency converter ACS800-37-1430-3.
Jet Water Pump Powering: ABB 4 poles asynchronous electric motor M3BP355
driven by ABB ACS800-37-0640-3.
Dredge Power Control System: ABB integrated control system of motor parameters
(dredging/discharging modes) inclusive all protections
and alarms. System is controlled from the Bridge Dredge
station via Etelnet communication.
Dredging Gantries: 3 off dredging gantries c/w swell compensator system.
Trailing Suction Tube: Steel tube 700 mm (28 in.) diameter, length based
in a standard dredging depth of 30 m (98 feet).
Dredge Head: Californian type dredge head with over the fenders of
about 2,240 mm (88 in.).
Overflow: Adjustable overflow inner diameter movable part
1,100 mm (43 in.).
Bow Connection: A frame type for 10 bar pressure, 700 mm (28 in.) diameter
and 15º angle, bend piece 135º and rainbow nozzle.
Monitoring & Control System: Full version IHC DN700 Monitoring and Dredge Control System.
Unloading
The unloading of the material may be carried out in three ways:


One, with the opening of the hopper, in free fall, either instant or controlled.



The second one, with the dredge pump, through a floating pipe at minimum

distance of 1,000 m (3,281 ft.) and normally over than 1,200 m (ft.) with a height
difference of +10 m (33 ft.).


The third one, also with dredge pump, throwing the cargo through the rainbow

nozzle installed in the bow.
Other Equipment
Communication:
Navigation Area: A3
Hydraulic Pumps: 8 each
Power: 160 kW x 3 215 hp x 3
Power: 100 kW x 2 134 hp x 2
Power: 11 kW x 2 15 hp x 2
Power: 40 kW x 1 54 hp x 1