Marine Engineering

Within the field of marine engineering Royal Roos offers a complete range of engineering works, from concept to basic design and detailed engineering. From modifications on deck to a new engine room layout, seafastening arrangements for towage or mooring analysis, whether it is structural, mechanical or electronical, we have skilled staff and the software to do the job.

In the field of marine salvage Royal Roos offers the following services:

  • Salvage engineering to prepare for wreck removals
  • Salvage plans and method statements
  • Naval architectural calculations to determine ground reaction, damaged stability and residual ship’s strength
  • Pre-modelling of vessels to be prepared at all times; in case of an emergency response the preparation of the salvage plan can commence even before the salvage team is on site!


Salvage Engineering & Consultancy

LTE, Conversion, Class renewal

One of the spearheads of our company is repair and modification works for Life Time Extension (LTE), conversion and class renewal of ships and offshore structures. As a company we underwrite the importance of timely repair and modification works in order to extend the life time of any seagoing vessel. In this process we work in close cooperation with classification societies. We dedicate ourselves to always think a step ahead for our clients. Giving the best possible advice and meeting the relevant class society’s rules.

All Royal Roos engineers have extensive expertise with project support in complex projects  for docking, repair & maintenance, conversion and new building of ships and offshore structures. We can offer the complete range of support from pre-specs to close out documentation or any singular part in this process.




Royal Roos SketchExpress offers you a user friendly, professional and cost efficient way to transform your sketches or draft technical drawings into professional 2D or 3D drawings. Whether you need as-built drawings, reverse engineering drawings or mechanical 3D modelling; sketch express transforms your sketch to a perfect drawing!

SketchExpress is easy to use, professional. It saves you time and money. Read more about SketchExpress below or go directly to the site.


The idea for SketchExpress was born working as a project engineer for modifications on dredging equipment and later as technical superintendent for the maritime industry. Working on-site changes and repairs to existing equipment are often needed, but necessary drawings are either not available, not updated or only accessible as hardcopy or .pdf. But what you need is a good quality technical drawing for repairs and/or fabrication of parts, preferably at once.

With the SketchExpress application it is possible to get CAD drawings - including necessary changes - of good quality in no time. While the draftsman is preparing your drawing you can start up the repair and/or production works for the shipyard/workshop. The only thing you need is a computer, tablet or smartphone with an internet connection.


Just 4 easy steps from your sketch to drawing:

Step 1

REGISTER: Take a sip of your coffee and wait for the confirmation email.

Step 2

UPLOAD: Specify the drawing/project particulars and upload your sketches to the vault. You will receive an email message when your drawing/project has been accepted.

Step 3

REVISE: After acceptance of the drawing/project you are linked to a draftsman. Communication is easy via notes posted to the application dashboard. Two revision rounds are included.

Step 4

DOWNLOAD: The draftsman will upload the final version in the requested file format. The drawing is released for download after the SketchExpress Administrator has done a final approval quality check.

A file in .pdf...

...easily converted into a .dwg

RoyalRoos B.V.

Galileistraat 15

3029 AL  Rotterdam, The Netherlands

Tel. (work): +31(0)10-4373117


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Chamber of Commerce Rotterdam nr. 55924425