Our Journey

Our General Manager, Martijn Koppert, and Senior Structural Engineer, Arie van der Eijk, became close friends when working together in the Middle East. Later in 2007, they identified a market of temporary works structures for offshore installation projects and established Temporary Works Design.

Our mission has been to keep improving the construction methods of offshore and civil projects. By continuously challenging the current construction practices, we develop tailored methods to ensure projects are executed safely, on time, and within budget. Our dedication to smart design solutions helped us grow rapidly. At the same time, we still keep our tradition of being bold, flexible, and creative.


Martijn and Arie met in Oman and quickly formed a friendship. A few years later, they reconnected in the Netherlands and started working together. Their first project, the Lisa Robin Rigg (design of the upending frame), put TWD on the radar for future offshore projects.

2007 – 2010

By 2010, we had an office in Rotterdam with a small team and a steady stream of projects. We found our niche and started developing our ideas into innovative solutions for offshore installations. The Motion Compensation System is a good example of these solutions.

2010 – 2011

In 2011, we expanded both our company size and the range of our services. Our team of 20 colleagues started providing stability analysis and ballasting plans as well as procurement and fabrication assistance. We specialized in complete project implementation, from structural designs to fabrication management.

2011 – 2014

In late 2014, we had a total of 50 colleagues and established a marine engineering department. Our naval architects started delivering independent marine analysis. It could also integrate seamlessly within the larger TWD scopes to ensure complete designs for offshore project executions.

2014 – 2016

Between 2014 to 2016, we completed multiple successful offshore wind projects, within which the Van Oord Monopile Gripper Frame is one of them. We also developed the mechanical system for the motion compensated crane on Barge Master T40, which won the 2015 ‘Ship of the Year’ award. In 2016, we supported the Delft Hyperloop team with a test frame design.

2016 – 2017

We welcomed 2017 with our 10-year anniversary and 100 TWD colleagues. In June 2017, we launched an international branch in the UK. Soon, our UK team designed the revolutionary “walking piling gate” that received the “Innovation Award” during The Marine and Coastal Civil Engineering Expo.

2017 – 2019

In 2019, we opened TWD Greece. the branch began operating projects in the energy sector and design of cable handling systems, delivering quality engineering solutions (e.g. a 200t onshore storage carousel). Soon after, the office diversified its portfolio by entering into Heavy Civils, Heavy Transport and Installation, and Onshore Wind.

2020 to Today

TWD continues to grow. In 2020, we welcomed our 200th colleague and contributed to over 200 transport, installation, or construction projects. As we scale up rapidly, we continue sharing the joy of simplicity and making an impact on key infrastructures and energy transitions worldwide.

Starting a project?

Curious about how we can help you with your next project? Reach out, and let us show you how.