Argentina
Pentamar SA
Australia
Conhur
Hall Contracting Pty Ltd
Neumann Contractors
Bahrain
Arabian Dredging Company
Belgium
Baggerwerken Decloedt & Zn
Besix
DEME Group
Dredging International
Ghent Dredging
Group Decloedt
Herbosch - Kiere
Jan De Nul Group
Brazil
Bandeirantes Dragagem e Construcao Ltda
Enterpa Engenharia Ltda  (Portugues)
Enterpa Engenharia Ltda  (English)
Luschi
Canada
Fraser River Pile and Dredge Ltd
Groupe Ocean / Ocean Group Inc
China
China Harbour Engineering Company (Group) - CHEC
CCCC Guangzhou Dredging Company
CCCC Shanghai Dredging Company (SDC)
CCCC SDC Orient Dredging Engineering Branch
CCCC SDC Waterway Construction Co. Ltd.
CCCC Dredging (Group) Company Ltd.
CCCC TDC Southern Communications Construction Co. Ltd.
CCCC Tian Hang Harbour Engineering Co. Ltd.
CCCC / Tianjin Dredging Co., Ship Management Branch
Dachan Island Group
Guangdong Hongda Guang Hang Engineering Co. Ltd.
Colombia
Dragados Hidraulicos
Danmark
Casani So Entreprise ApS
Peter Madsen Rederi A/S
Pihl and Son AS
Rederiet Erik Hoj
Rohde Nielsen
Finland
Terramare Oy
Vaasan Ruoppaus Oy
Wasa Dredging
France
Bauland TP
EMCC
Tournaud
Germany
Hegemann GmbH
Heinrich Hirdes GmbH
Johann Bunte Bauunternehmung GmbH und Co. KG
Meyer & Van der Kamp GmbH und Co. KG
Reinhold Meister GmbH
Greece
Archirodon
Iceland
Bjorgun EHF
India
Dharti Dredging and Infrastructure Ltd
Dredging Corporation of India Ltd (DCI)
Meka Group
Rock & Reef Dredging Pvt Ltd
Indonesia
PT Rukina Sukses Abadi
PT Rukindo - PT (Persero) Pengerukan Indonesia
Iran
Moshiran-Kariz Joint Venture (M-K JV)
Italy
CGX Costruzioni Generali Xodo Srl
Cooperativa San Martino
F.lli Scuttari Di Scuttari Benito & C. S.a.s.
Sales SpA
S.L.I. Mar Srl
SOMIT Srl
Japan
Kanmon Port and Habour Construction
Penta Ocean Construction Co Ltd
Toa Corporation
Kuwait
Gulf Dredging & General Contracting Co. (GDC)
Latvia
Ekohidrotechnika Ltd. (EHT)
Malaysia
Inai Kiara Sdn Bhd
Malaysian Maritime & Dredging Corporation Sdn Bhd (MMDC)
See Yong & Son Construction Sdn Bhd
Mexico
Dragamex SA de CV
Morocco
Drapor
The Netherlands
Baggerbedrijf de Boer / Dutch Dredging
BMS Dredging
BV Aannemingsmij. 'De Branding' v/h J. Stolk
Hakkers Werkendam
Heuvelman Ibis
L. Paans & Zonen
Martens en Van Oord
Reimerswaal Dredging
Royal Boskalis Westminster
Royal Smals
Tideway
Van den Herik Sliedrecht
Van der Kamp
Van Oord
Verboon Maasland
Zevenmorgen Bagger en Overslag BV
Nigeria
Elcathay Dredging Company Nig. Ltd.
Julius Berger Nigeria PLC
Norway
Secora AS
Sjoentreprenoren AS
Pakistan
MEW (Pvt.) Ltd.
Poland
PRCiP Sp zoo
Portugal
Sofareia
Qatar
Seaworks Co.
Saudi Arabia
Huta Marine Works Ltd.
Saudi Dredging Ltd.
Russia
Caspian Hydra Technologies
Senegal
Fougerolle
South Africa
T&T Marine
Spain
ACS Actividades de Construccion y Servicios SA
Ayora Puertos y Obras
Canlemar SL
Drag-Sur, SL
Flota Proyectos Singulares (FPS)
Marine Service Mediterranean SL
Sweden
Baltic Dredging Group
Boskalis Sweden AB
Svensk Muddring AB
Taiwan
Hung Hua Construction Co. Ltd.
Thailand
Yoolim Boat Co. Ltd. (YLB)
Ukraine
Cherazmorput / Black Sea and Sea of Azov Dredging Company
United Arab Emirates (UAE)
Bin Suroor International Contracting LLC
Gulf Cobla LLC
National Marine Dredging Company
Target Engineering Construction Company LLC
United Kingdom (UK)
Humber Work Boats Ltd.
Land & Water Group
UK Dredging
Westminster Dredging Company
United States of America (USA)
American Marine Constructors Inc.
C.F. Bean LLC
Cashman Dredging
Dutra Group
Faust Corporation
General Construction Company
Great Lakes Dredge & Dock Co. (GLDD)
J.E. McAmis Inc.
Javeler Construction Co. Inc.
Jay Cashman Inc.
Manson Construction Company
Marinex Construction Company Inc.
Nova Group Inc.
Orion Marine Group
Renda Marine Inc.
Rowboat Dock & Dredge
United Dredging Corporation
Weeks Marine Inc.