Dredging

Alvar Nuñez

Alvar Nuñez Cabeza de Vaca and Sebastiano Caboto are dredgers specifically designed for operation in shallow waters with hopper capacity of 3 400 m3 and a loaded draught of only 5 meters.

The new hopper dredgers are under construction and will be delivered in 2011 by Tianjin Xinhe Shipyard in the Peoples Republic of China.

Balder R / Njord R

The sister ships Balder R and Njord R are specially designed to work in shallow water world wide, and are one of the most versatile split hopper suction trailers ever built.

They were designed for Rhode Nielsen A/S and are equipped with two trailing suction pipes with an inner diameter of 700 mm, enabling effective dredging. The load can be discharged by backpumping to the sea bed or into a trench through the suction pipe, over the bow as rainbowing or through the bow connection to a pipe line of ND600/700/800° up to a distance of approximately 4 km.

Baldur

Baldur is a Backhoe Pontoon Dredger accommodating a Komatsu PC5500. But is prepared for a future installation of a Bucyrus RH400.

Baldur is fitted with 2 fixed spuds and one ”walking” forward spud. All spuds can be tilted and can be fastened horizontal on deck for (sea-) towage. All spuds are fitted with two winches which will prevent from losing a spud in case of wire breaks.

The hull is a sturdy welded construction with double bottom and sides. Spuds are made for a depth of 24 m and are prepared for a future lengthening to 30 m depth.
Electric power is generated by diesel generators, located in a dedicated engine room in the pontoon and are cooled by box coolers. Hydraulic power for spud operations (hoisting, lowering, tilting) is generated by a powerpack installed in the pontoon.

A number of boom, stick and bucket arrangements are available as well as other attachments like grabs, rippers, etc.
Accommodation is located at the forward end of the vessel, suitable for 12 persons.

D13 Macuti

he FKAB D13 design is a twin screw trailing suction hopper dredger (TSHD) with hopper capacity of 2 500 m3.

The THSD is equipped with a trailing suction pipe, hinged bottom doors for dumping the spoil and a bow connection to delivery the spoil to shore.

Deck house with 12 cabins accommodation.

De Bougainville

De Bougainville is a trailing suction split hopper dredger with a capacity of 3 700 m3 and was built at the Tianjin Xinhe Shipyard in the Peoples Republic of China.

Dredge-X800

The FKAB/HollandMT Dredge-X800 design is a Backhoe Pontoon Dredger accommodating a Liebherr P9800. The Dredge-X800 is fitted with 2 fixed spuds and one ”walking” forward spud.

All spuds can be tilted by cylinders, with wires still attached and can be fastened horizontal on deck for (sea-) towage. The hull is a sturdy welded construction with double bottom and sides.

The hydraulics of the excavator is driven by electric motors located in the excavator. Electric power is generated by diesel generators, located in a dedicated engine room in the pontoon and are cooled by box coolers. Hydraulic power for spud operations (hoisting, lowering, tilting) is generated by a powerpack installed in the pontoon.

A number of boom, stick and bucket arrangements are available as well as other attachments like grabs, rippers, etc.
Accommodation is located at the forward end of the vessel, suitable for 9 persons.

Hondius

Cutter dredgers Hondius and Kaerius were delivered from Tianjin Xinhe Shipyard in the Peoples Republic of China on the 10th of February 2007 and the 7th of June 2007 respectively.

They are capable of dredging compacted sand, stiff clay, rock and similar soils. Both dredgers are equipped with 2 dredge pumps and 2 identical spuds.

Jan Blanken

The Jan Brink design is a self propellered split hopper unit with hopper capacity of 2800 m3.

The vessel is constructed for unrestricted operation worldwide. Trasporting all kinds of dredged and other bulk material. Wide bottom opening of 5 m allowing large stones and quick discharge.

The two jet water pumps with a capacity of 3400 m3/h at 2 Bar supplying two jet water guns for effective discharge, also for sticky materials. The jet water is also used as side thrusters in the bow.
Deck house with accommodation for 9 persons.

KAO 505

The Vessel is designed and constructed as a twin shaft with nozzles, diesel driven trailing suction hopper dredger (TSHD) with machinery space and all accommodations including Navigation Bridge located aft. Pump room is located forwards of the Hopper space. Dredging up to 25 m.

Free passage from engine room to pumproom forward. Above this passage way waterballast tanks and fuel oil tanks are located.
The dredger is fitted with one trailer suction pipe. The load can be discharge through two rows of single type box-shaped bottom doors, by back-pumping ti the seabed or into a trench through the suction pipe, over the bow as rainbowing or through the bow connection to a pipe line. The dredgepump, located in the pumproom driven by a diesel engine through a reduction gear box.

L’Aigle

L’Aigle, La Boudeuse, L’Etoile, Le Sphinx, Le Guerrier, Astrolabe and Boussole’ are self-propelled split hoppers for transport of material dredged by Jan De Nul cutter suction dredgers.

These vessels are built at Tianjin Xinhe Shipyard in the Peoples Republic of China. L’Aigle was delivered on the 2nd of September 2005, La Boudeuse on the 1st of December 2005, L’Etoile on 24 January 2006, Le Sphinx on 22 May 2007 and Le Guerrier on 16 July 2007. Astrolabe is expected to be delivered by the end of 2009 and Boussole in 2010.

Terra Ferre 501

The design is a 3,800 m3 Push Spilt Hopper Barge, redesigned from a towed Split Hopper Barge. The split hopper is 192’0” x 39’6”, with capacity of about 3,800m3. One adjustable overflow is fitted close to aft end of hopper

No Split Engine Room – NOSPER

Principle
  • One no split body containing One common engine room.
  • The engine room/accommodation body are connected by hinges/links to the split hopper part
  • Deck-house mounted directly above the engine room.
  • Hopper and forebody are split as for normal split hopper ­vessels.