All4dredging ©

All4dredging is a Dutch company specialized in repair services for dredging and offshore vessels. Although newly established, the team behind All4dredging brings many years of hands-on experience in dredging, offshore, merchant shipping and heavy lift operations.

Through extensive work on dredgers and offshore vessels, we identified gaps in the maritime repair market. This led to the creation of All4dredging, with a clear focus on delivering specialized, practical, and efficient repair solutions.

Dredging repairs are our core business, but our expertise extends to a wide range of ship repair and maintenance activities. We operate as a single point of contact and support clients throughout the entire repair process, from pre-inspection and preparation to project management and execution.

In addition to our flying service teams, All4dredging operates a 1.200 m² workshop facility in Klaipeda, Lithuania, enabling flexible and efficient support for complex repair scopes.

With a hands-on mentality and a no-nonsense approach, All4dredging understands every phase of the repair process and delivers projects from start to successful completion.

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The hardest work begins in dry-dock.

Inspection on board

  • Pre-inspections on board and inspection report
  • Preparation of the repair specification & planning
  • Preparation of material and spare parts req.
  • Technical (service engineers) supervision
  • Supervision during repairs around the world
  • Consultancy works related to dredging industry
  • Training/advisory during repairs

In-situ machining and repair works

All kind of on-site machining works.

  • In-situ machining
  • Line boring
  • Milling
  • Flange facing
  • Reconditioning by welding up (surface and holes)

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.

Contact us

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.


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.

Contact us

On-site line boring / machining and milling works

  • In-situ machining
  • Line boring
  • Milling
  • Flange facing
  • Reconditioning by means of welding up (surface and holes)
  • Alignment works

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

Contact us

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

All4dredging B.V.
All4dredging B.V.

Johan Hiemstra

Managing director

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