Capital Dredging

Local economies must have good import and export harbours if they want to play an important part in international trade. The capacity of their ports must be geared to the ever increasing needs of the global market. But there is not only the expansion of world trade resulting from increasing prosperity and the growing world population to consider, also the vessels are becoming increasingly large. Harbours must be expanded if they want to be able to receive these giants.

Therefore, capital dredging and port extension works are of great economic significance. Existing harbours are deepened or enlarged to be able to receive more and larger container vessels. In some regions, new harbours are developed to meet the demand for raw materials.

With its impressive fleet Jan De Nul Group deepens, widens or enlarges existing access channels, berths and turning basins. Whenever there is demand for it, the group also builds a completely new harbour from scratch.

 

Construction of LNG Port Facilities near Sabetta Settlement on the Yamal Peninsula, including Construction of a 50 km Shipping Approach Channel in the OB Bay

Dredging and dumping offshore a total approximate volume up to 24,700,000 m³

Dredging and dumping offshore a total approximate volume up to 24,700,000 m³

Key figures
Country

Russia

Client's name

USK MOST, JSC

Contractor's role

Main Contractor

Period

13.07.2016 - 12.10.2016 (First season)
TBC 2017 (Second season)

Technical specs
Equipment

CSDs Fernão de Magalhães, Zheng He
TSHDs Filippo Brunellesschi, Francis Beaufort, Al-Idrisi, Alexander Von Humboldt, James Cook, Kaishuu,
Gerardus Mercator, Pinta
SHBs Le Guerrier, Boussole, L’Aigle, De Bougainville, L’Etoile, Le Sphinx, Marquis de Prié, Trinidad
Survey Launch DN81

Scope

Dredging a basin with a design depth of -15.2 m BS77 including two berth pockets to a design depth of -15.5 m BS77 (approx. 5,560,000 m³) (2016);
Dredging an access channel with a design depth of -15.1 m BS77, a bottom width of 315 m and a length of 5.5 km (approx. 2,500,000 million m³) (2016);
Dredging a sea channel with a length of about 50 km, 295 m bottom width and a design depth of 15.1 m BS77 (approx. 12,120,000 m³); (2016);
Dredging an access channel with a design depth of -15.1 m BS77, a bottom width from 315 m till 495 m and a length of 5.5 km (approx. 4,520,000 m³), (2017);
Dumping dredged material offshore at 3 designated dumps.
Challenges: remote site with very limited public infrastructure located in an area exposed to sea ice and strong currents (only accessible during summer months JUL - SEP).

Volume

Dredging works: approx. 24,700,000 m³

Soil

(Clayey) Silt, sand and permafrost

Dredging depth

Approx. -15 m BS77

Egypt, New Suez Canal

Capital Dredging for the creation of the new Suez Canal, Lots 2, 3, 4 and 5

Capital Dredging for the creation of the new Suez Canal, Lots 2, 3, 4 and 5

Key figures
Country

Egypt

Client's name

Suez Canal Authority (SCA)

Contractor's role

Main Contractor (Part JDN: 25%)

Period

01.11.2014 - 01.08.2015

Technical specs
Equipment

CSD Ibn Battuta, CSD J.F.J. De Nul, CSD Zheng He,
CSD Fernão De Magalhães, CSD Kaerius, CSD Hondius, CSD Leonardo da Vinci ( = Spread Jan De Nul, but 18 CSDs in total)

Scope

Capital Dredging for the creation of a 35 km new canal which runs parallel to the existing one. The new canal will be 24m deep, with a bottom width of 147m.

Volume

180,000,000 m³ (600,000 m³/day)
additional scope approx. 15,000,000 m³

Soil

Loose, dense and very dense sand, with fractions of soft clay and gypsum / calcarenite.

Depth

24 m

Panama, Widening and Deepening of the Atlantic Entrance & North Approach Channel to the Third Set of Locks of the Panama Canal

Deepening and widening of the navigational channel and the north approach channel to the third set of locks

 

Deepening and widening of the navigational channel and the north approach channel to the third set of locks

 

Key figures
Country

Panama

Client's name

Authoridad del Canal de Panama ACP

Contractor's role

Main Contractor

Period
December 24, 2009 to April 24, 2013

Brazil, Capital dredging services for Shipyard Enseada do Paraguaçu

Capital dredging services for the construction of a new shipyard

Capital dredging services for the construction of a new shipyard

Key figures
Country

Brazil

Client's name

ESTALEIRO ENSEADA DO PARAGUAÇU S.A. (EEP)

Contractor's role

Main Contractor

Technical specs
Equipment

Cutter Suction Dredger Niccolò Machiavelli
Trailing Suction Hopper Dredgers Pedro Alvares Cabral, James Cook, Kaishuu
DN46

Scope

2,640,000 m³ dredging in berth areas and approach area

Soil

Soft soil (clay, sand) & hard (very dense sand, sandstone)

Volume

Dredging works: 2,640,000 m³

Dredging depth

13 m

Brazil, EBN Shipyard and Naval Base in Itaguaí

Dredging and reclamation works for new submarine naval base and submarine shipyard

 

Dredging and reclamation works for new submarine naval base and submarine shipyard

 

Key figures
Country

Brazil

Client's name

Marinha do Brasil

Contractor's role

Subcontractor

Period
October 15, 2010 to December 5, 2012
Technical specs
Scope

Capital dredging

Soil

Dredging: silt, soft to stiff clay, fine sands
Reclamation: medium to coarse sand

Volume

Dredging: 8,800,000 m³
Dredging contaminated soils: 160,000 m³
Reclamation: 6,200,000 m³
Dredging of contaminated sediments and filling of geotubes for dewatering and consolidation: 160,000 m³

Dredging depth

Between 2 and 30 m

Brazil, Dredging for Port Development of the Port of Rio Grande

Deepening of access channel to port of Rio Grande

Deepening of access channel to port of Rio Grande

Key figures
Country

Brazil

Client's name

Secretaria Especial de Portos Da Presidência da República (SEP/PR)

Contractor's role

Consortium Partner (Part JDN 93%)

Technical specs
Scope

Deepening and maintenance dredging

Equipment

Trailing Suction Hopper Dredger Juan Sebastián de Elcano: 1 year of deepening dredging
Trailing Suction Hopper Dredger Sanderus: 2 years of maintenance dredging

Soil

Silt and clay

Volume

Dredging:
18,348,979 m³ (deepening)
2,729,875 m³ (maintenance)

Dredging depth

16 m CD internal channel, 18 m CD external channel

Man-hours for construction

650,000 hours

Man-hours for engineering

22,000 hours

Australia, Rapid Growth Project

BHP Billiton Iron Ore, located in Western Australia’s Pilbara region, is one of Australia’s largest iron ore producers with...

BHP Billiton Iron Ore, located in Western Australia’s Pilbara region, is one of Australia’s largest iron ore producers with mine, rail and port operations. In 2008 the company was experiencing significant growth and was very focused on growing its business to meet the future demand in iron ore. They achieved this by a series of so called Rapid Growth Projects.

Jan De Nul Group was in charge of one of these projects, namely the Rapid Growth Project 5 & 6. These projects involved the construction of two new two-berth wharf facilities and the installation of new ship-loading infrastructure at both Harriet and Nelson Point in Port Hedland. With these new facilities BHP was able to maximise its output from the Inner Harbour of this port, an essential step in their expansion program.

Key figures
Country

Australia

Client's name

BHP Billiton Iron Ore Pty Ltd

Contractor's role

Main Contractor

Technical specs
Scope

Port Infrastructure: capital dredging

Soil

40 % clay/sand/gravel and 60 % sandstone

Volume

Dredging: 9,100,000 m³
Reclamation: 6,800,000 m³

Dredging depth

-9.3 / -14.8 / -19.2 m CD

Equipment

Cutter Suction Dredger: Leonardo da Vinci
Backhoe Dredgers: Postnik Yakovlev, Mimar Sinan
Split Hopper Barges: L’Etoile, Le Sphinx, Trinidad, Soundcem II & III
Crane barge DN150 with Liebherr crane HS895