Ship conversion and refit

We renew, redesign and rebuild ships to new technical and functional requirements.

Let's work together
  • 100+ years of experience
  • Strategic location near the North Sea
  • Full service shipyard

Key figures

2 floating docks up to 176 meters
Tugboat Created with Sketch.
147 meter slipway
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600 meter quay side
160 skilled employees

Ship conversions

Ship conversion is a very specialized line of work that Royal Niestern Sander has made its own. Royal Niestern Sander has a large portfolio of very diverse and complex ship conversions. Think of the renewal of old ships, the redesign of existing ships or the conversion to new technical and functional requirements. Here the customer question comes first. A customer-specific design is created. Then the engineering takes place. Customization as it should be

  • In-house design & engineering
  • Fully equipped workshop
  • New building facilities
  • Experience with different ship types
Discover our projects

Dock 1

  • 105 meters in length
  • 19 meters in width
  • Vessels of 5.000 ton (~10.000 DWT)

Dock 2

  • 176 meters in length
  • 27 meters in width
  • Ships up to 10.000 ton (~20.000 DWT)

New building facilities

  • 6 construction halls
  • In-house engineering
  • Efficient project management

Refit and life time extention

Growing old is inevitable. At Niestern Sander we believe a ship can extend her life after many years of loyal service. A refit at our shipyard will make your vessel completely up to date with the latest technical innovations. This results in a completely refurbished and state of the art vessel in compliance with the latest rules and regulations.

  • Alternative fuel conversion
  • Refit
  • Reburbishment
  • Ballast water management system installation
  • Scrubber installation

Track record ship conversion

Conversion supply vessel 'KASTEELBORG' into walk to work vessel

The Blue Queen arrived in Delfzijl from Norway in late 2017. This standard PX121 Platform Supply Vessel (PSV) then spent the next 12 weeks being whipped into shape by Dutch shipyard Royal Niestern Sander, working on behalf of Wagenborg Offshore. Converted into a dedicated Walk-to-Work Emergency Response and Rescue Vessel, the PSV – renamed the Kasteelborg – was delivered on schedule in March 2018. It was a challenging conversion project in which time and planning played a major role.

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Fully electric utility vessel 'PW18'

Shipyard Royal Niestern Sander – a wholly owned subsidiary of the Wagenborg Group – has delivered the first Dutch fully electric utility vessel to the Province of Groningen. The new green vessel, the PW 18, was christened in March 2019 by Fleur Gräper-van Koolwijk, Executive Councillor for the Province of Groningen. After the christening ceremony, we spoke to the shipyard’s Managing Director Jan Doorduin and Fleur Gräper-van Koolwijk about this sustainable ship.

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Naval research vessel 'DUPUY DE LÔME'

In early 2002, a project was submitted that was both ambitious and bold. It was a research vessel for the French shipping company Campagnie National de Navigations, which acted on behalf of the French navy. This construction makes it possible to build a naval vessel on a foreign shipyard under a merchant flag.

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