IADC has over a hundred main and associated members. Together they represent the forefront of the dredging industry.

Royal Boskalis

Royal Boskalis is a leading global services provider operating in the dredging, maritime infrastructure and maritime services sectors.


The Belgian dredging and hydraulic engineering group DEME NV has won a prominent position on the world market in a number of highly specialized and complex hydraulic disciplines.

Dutch Dredging

Baggerbedrijf de Boer – Dutch Dredging is a medium size dredging company, based in Sliedrecht in the Netherlands. The holding is an independent private company. The total scope of activities consists of dredging, surveying and related marine operations in the fullest sense.

Group De Cloedt
DC Industrial NV-SA / Group De Cloedt

Group De Cloedt carries out dredging contracts under its own administration or with partners and/or subcontractors. This concerns both environmental dredging works and capital dredging works.

Gulf Cobla (L.L.C.)

Gulf Cobla is an international dredging company, located in Dubai and focused on dredging and land reclamation works in the Middle East and parts of South Asia.

Hyundai Engineering & Construction Co., LTD.

HYUNDAI Engineering & Construction CO., LTD. was founded in 1947 and has been Korea’s leading land development and construction industries, continuously ranking first in domestic construction capability evaluations.

Jan De Nul Group

People and global expertise. These are the corner stones of Jan De Nul Group’s phenomenal success. Thanks to its skilled employees and the world’s most modern fleet, Jan De Nul Group is a leading expert in dredging and marine construction activities, as well as in specialized services for the offshore industry of oil, gas and renewable energy.

NMDC Group

National Marine Dredging Company – NMDC aspires to become a leading Marine Contractor in the ME region.

Penta-Ocean Construction Co., Ltd.

Penta-Ocean started business in 1896 in Hiroshima, Japan as a marine contractor. Over the last 100 years, the company has pursued advanced technologies which provide solutions to civil, marine and architectural engineering projects associated with urban growth and the environment.

Rohde Nielsen A/S

Rohde Nielsen A/S operates worldwide as a general contractor as well as a subcontractor.

Toa Corporation

Toa Corporation since its establishment in 1908, has been engaged in dredging and reclamation for the construction of harbours and their related facilities, design and execution of coastline buildings, construction of airports, marine leisure facilities, warehouses for distribution, factories and power plants.

Van Oord

As a global marine contractor, Van Oord focuses on dredging, oil & gas infrastructure and offshore wind.


CCCC Dredging (Group) Co.,Ltd.

CCCC Dredging (Group) Co.,Ltd. is an observer of IADC and a world-renowned international contractor that is a subsidiary of China Communications Construction Company Ltd (CCCC).

All Members

BKI Egypt for Marine Contracting Works S.A.E., Cairo, Egypt
Dredging International Services Nigeria Ltd, Ikoyi Lagos, Nigeria
Jan De Nul Dredging Limited, Port Louis, Republic of Mauritius
Nigerian Westminster Dredging and Marine Ltd., Lagos, Nigeria
Van Oord Dredging and Marine Contractors B.V. – Angola, representation office in Luanda
Van Oord Mozambique Ltda., Maputo, Mozambique
Van Oord Nigeria Ltd, Victoria Island, Nigeria

Boskalis International (S) Pte. Ltd., Singapore
Boskalis Philippines Inc., Pasig City, Philippines
Boskalis Smit India LLP, Mumbai, India
Dredging International Asia Pacific (Pte) Ltd., Singapore
Dredging International Indonesia PTE LTDM, Jakarta, Indonesia
Hyundai Engineering & Construction Co. Ltd., Seoul, Korea
International Seaport Dredging Private Ltd., New Delhi, India
Jan De Nul Dredging India Pvt. Ltd., India
Jan De Nul Singapore Pte. Ltd., Singapore
P.T. Boskalis International Indonesia, Jakarta, Indonesia
Penta-Ocean Construction Co. Ltd., Tokyo, Japan
PT Van Oord Indonesia, Jakarta, Indonesia
Toa Corporation, Tokyo, Japan
Van Oord (Malaysia) Sdn Bhd, Selangor, Malaysia
Van Oord (Shanghai) Dredging Co. Ltd, Shanghai, PR China
Van Oord Dredging and Marine Contractors B.V. – Azerbaijan, branch in Baku
Van Oord Dredging and Marine Contractors B.V. – Kazakhstan, branch in Manigistau
Van Oord Dredging and Marine Contractors B.V. – Vietnam, representation office in Hanoi
Van Oord Dredging and Marine Contractors bv Hong Kong Branch, Hong Kong, PR China
Van Oord Dredging and Marine Contractors bv Korea Branch, Busan, Republic of Korea
Van Oord Dredging and Marine Contractors bv Philippines Branch, Manilla, Philippines
Van Oord Dredging and Marine Contractors bv Singapore Branch, Singapore
Van Oord India Pte Ltd, Mumbai, India
Van Oord Thai Ltd, Bangkok, Thailand



Boskalis Australia Pty, Ltd., Sydney, Australia
Dredging International (Australia) Pty. Ltd., Brisbane, QLD, Australia
Jan De Nul Australia Ltd., Australia
NZ Dredging & General Works Ltd, Maunganui, New Zealand
Van Oord Australia Pty Ltd., Brisbane, QLD, Australia

Atlantique Dragage Sarl, St. Germain en Laye, France
Baggerbedrijf de Boer B.V. | Dutch Dredging B.V., Netherlands
Baggermaatschappij Boskalis B.V., Papendrecht, Netherlands
Baggerwerken Decloedt & Zoon NV, Oostende, Belgium
BKW Dredging & Contracting Ltd., Cyprus
Boskalis International B.V., Papendrecht, Netherlands
Boskalis Italia Srl., Rome, Italy
Boskalis Nederland B.V., Rotterdam, Netherlands
Boskalis Offshore Contracting B.V., Netherlands
Boskalis Offshore Subsea Contracting B.V., Papendrecht , Netherlands
Boskalis Sweden AB, Gothenburg, Sweden
Boskalis Westminster Contracting Limited, Limassol, Cyprus
Boskalis Westminster Ltd., Fareham, UK
Boskalis Westminster Shipping BV, Papendrecht, Netherlands
BW Marine (Cyprus) Ltd, Limassol, Cyprus
BW Marine B.V., Papendrecht, The Netherlands
DC Industrial NV-SA / Group De Cloedt, Brussel, Belgium
DEME Building Materials NV (DBM), Zwijndrecht, Belgium
DEME Cyprus LTD, Nicosia, Cyprus
DEME Dredging NV, Zwijndrecht, Belgium
DEME Luxembourg SA, Luxembourg, luxembourg
DEME Offshore Procurement & Shiping LU SA, Luxembourg, Luxembourg
Dravo SA, Italia, Amelia (TR), Italy
Dravo SA, Lisbon, Portugal
Dravo SA, Madrid, Spain
Dredging and Contracting Rotterdam b.v., Bergen op Zoom, Netherlands
Dredging and Maritime Management s.a., Capellen, Luxembourg
Dredging International N.V., Zwijndrecht, Belgium
Dredging International Nederland BV, Breda, Netherlands
Heinrich Hirdes G.m.b.H., Hamburg, Germany
Irish Dredging Company Ltd., Cork, Ireland
Jan De Nul (UK) Ltd., Ascot, UK
Jan De Nul Group (Sofidra S.A.), Capellen, Luxembourg
Jan De Nul n.v., Hofstade/Aalst, Belgium
Jan De Nul Nassbaggerei und Wasserbau GmbH, Bremen, Germany
Mijnster Zand- en Grinthandel bv, Rotterdam, Netherlands
NewWaves Solutions Ltd., London, UK
Nordsee Nassbagger-und Tiefbau GmbH, Bremen, Germany
Novadeal Ltd.,Cyprus
Paans Van Oord B.V., Rotterdam, Netherlands
Rock Fall Company Ltd, Aberdeen, UK
Rohde Nielsen A/S, Copenhagen, Denmark
Societa Italiana Dragaggi SpA ‘SIDRA’, Rome, Italy
Société de Dragage International ‘SDI’ SA, Lambersart, France
Sodraco International S.A.S., Armentières, France
Sodranord SARL, Le Blanc-Mesnil Cédex, France
Terramare Oy, Helsinki, Finland
TOA (LUX) S.A., Luxembourg, Luxembourg
Van Oord (Gibraltar) Ltd, Gibraltar
Van Oord ACZ Marine Contractors bv, Rotterdam, Netherlands
Van Oord België BVBA, St. Niklaas, Belgium
Van Oord DMC Aps, Copenhagen, Denmark
Van Oord Georgia LLC, Tbilisi, Georgia
Van Oord Ireland Ltd, Dublin, Ireland
Van Oord Middle East Ltd, Nicosia, Cyprus
Van Oord Nederland bv, Rotterdam, Netherlands
Van Oord Norway AS, in Oslo, Norway
Van Oord nv, Rotterdam, Netherlands
Van Oord Offshore bv, Gorinchem, Netherlands
Van Oord Russia Dredging and Marine Contractors, St. Petersburg, Russia
Van Oord UK Ltd., Small Dole, UK
Van Oord Wasserbau GmbH, Hamburg, Germany
Middle East
Boskalis Westminster (Oman) LLC, Muscat, Oman
Boskalis Westminster Al Rushaid Co. Ltd., Al Khobar, Saudi Arabia
Boskalis Westminster Contracting Limited, Abu Dhabi, UAE
Boskalis Westminster Contracting Limited, Manama, Bahrain
Gulf Cobla (Limited Liability Company), Dubai, UAE
Jan De Nul Dredging Ltd. (Dubai Branch), Dubai, UAE
Middle East Dredging Company (MEDCO), Doha, Qatar
National Marine Dredging Company, Abu Dhabi, UAE
Van Oord Bahrain WLL, Manama, Bahrain
Van Oord Gulf FZE, Dubai, UAE
The Americas
Boskalis Canada Dredging & Marine Services Ltd, Canada
Boskalis do Brasil Dragagem e Serviços Marítimos Ltda, Brazil
Boskalis International bv Sucursal Argentina, Buenos Aires, Argentina
Boskalis International Uruguay S.A., Montevideo, Uruguay
Boskalis Marine Contracting and Offshore Services S.A. de C.V. , Veracruz, Mexico
Boskalis Panama SA, Panama City, Panama
Compañía Sud Americana de Dragados S.A, Buenos Aires, Argentina
Jan De Nul do Brasil Dragagem Ltda., Brazil
Mexicana de Dragados S.A. de C.V., Mexico City, Mexico
Van Oord Bahamas Ltd., Nassau, Bahamas
Van Oord Canada Ltd., Calgary, Canada
Van Oord Curaçao nv, Willemstad, Curaçao
Van Oord de México, S.A. de C.V., Mexico City
Van Oord Marine Contractors Canada Ltd., Ontario
Van Oord Offshore (USA) LLC, in Houston, USA
Van Oord Panama SA, in Panama City, Panama
Van Oord Serviços de Operaçoes Maritimas Ltda, Rio de Janeiro, Brazil

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