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Newbuild & Conversion Support

Independent advice & supervision for dredging projects

When it comes to building or modifying a trailing suction hopper dredger (TSHD), getting it right from day one is critical. Design choices, supplier selection, and build quality will affect operational efficiency, crew workload and lifetime cost.

At All4dredging, we don’t just repair dredgers, we understand how they’re built and how they work under real conditions. That’s why clients also rely on us to advise on newbuilds, conversions and major refits both technically and practically.

What we offer

Independent technical advice

  • Design review of dredging systems, piping and hydraulic layout
  • Input on practical operability from a hands-on perspective
  • Evaluation of dredge pump and jet water system specifications
  • Materials and wear-part choices for heavy-duty service

Yard supervision

  • On-site monitoring during construction, outfitting and commissioning
  • Quality control on welding, machining and system installation
  • Interface between owner, shipyard and key system suppliers
  • Factory acceptance tests (FAT), harbor trials and performance testing

Project phase support

  • Concept & feasibility input
  • Specification drafting & supplier selection
  • Pre-launch inspection and punch listing
  • Sea-trial assistance and crew familiarization

Why choose All4dredging?

  • We bring real-world repair and operation insight - not just theory
  • We speak the language of both crews and engineers
  • We're independent, with no yard or OEM bias
  • We understand the challenges of working vessels - not just showpieces
  • We've supported vessels operating in harsh and high-demand environments worldwide

Involve us in the early stages of your newbuild or major conversion project and we’ll help steer your investment toward smarter choices and long-term reliability.

Whether you’re building your first dredger or refitting an aging workhorse, we can help make sure it’s done right.

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Dredging repair, maintenance and spare parts

All4dredging can assist in any repair of dredging equipment. Important to mention is that we are not limited to a single maker or certain age of equipment. From pumproom till dredgepipe and from bridge to engine room. That's why we dare to say that we can assist you with any repair on any type of dredger.

  • (Dis)mounting
  • Steel works
  • Machining works
  • Mechanical works
  • Modifications and or engineering
  • Installation of all equipment according to the procedures and lift plans
  • Operational and functional testing
  • Provide detailed measurement reports
  • Advise client on repair needs
  • Supervision during the repairs

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Dry-dock & repair

Repair supervision/guidance

If it is either a small repair, (de-)mobilization or a complete dry-docking, we can be of assistance for supervision and/or guidance during the complete project including finding a suitable yard or repair location. If this is not enough, we can even take the whole project completely out of your hands and coordinate it from A to Z. This is possible due to our wide range of experience and close cooperation with direct partners.

  • Supervision during repairs all around the world
  • Tendering for your repair projects
  • (de)mobilization for offshore vessels
  • Training/advisory during repairs

Specification and planning

We have the knowledge to perform inhouse estimation, prepare offers, review and/or adjust repair specifications and to prepare complete repair planning. Our key approach is that we like to discuss the planning up front with all parties involved before the works commence. This to ensure an optimal planning and minimize delays for everyone involved.

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Let's break the ice

We'd love to hear from you. 

Do you have a challenge, question, inquiry or would you like to hear more about us and what we could help you with. Depending on your wish feel free to reach out and let's check the possibilities together.


All4dredging

Your maritime service provider specialized in dredger and offshore vessel repairs.

  • Pre-inspections, repair offer preparation, specification overview and assistance
  • Service engineers and flying team (with seaman’s books) and own equipment
  • Dry-dock, afloat or enroute repairs
  • On-site and in-situ line boring, milling and flange facing
  • Torquing and tensioning
  • Alignments of all kinds
  • Detailed measurement and work reports
  • Project management, (docking) team leader(s), repair supervision
  • Detailed planning and repair procedure assistance and improvement ideas

Dredging specific:

  • Bottom door removal, overhaul and installation with own specialized equipment
  • Dredge pipe dismantling, overhaul, installation
  • Sliding piece/tracks, wear rings and suction bend repairs
  • Draghead repairs and/or modifications
  • Overflow and green valve removal, overhaul, installation
  • Dredge valves dismantling, overhaul and installation
  • Installation and/or reconditioning of wear resistant materials as hardox/creusabro

Besides the above we got a wide range of companies with who we closely cooperate to provide services for:

  • Sealing repairs/compression adjustment rubber on-site vulcanisation and repair
  • Hydraulic works and/or hydraulic overhaul of hydraulic parts
  • Spare parts of all kinds specific for dredgers and dredging equipment

For inquiries or more information: technical@all4dredging.nl