Cyes began over thirty years ago as a construction company specialising in maritime and port works. Since then, our active expansion and diversification strategy has made us a benchmark in infrastructure management and we are present throughout Spain while maintaining a policy of opening up international markets.

Over the years we have developed numerous projects, including: Dredging, Vertical breakwaters, Rubble mound breakwaters, Gravity quays, Piers supported by piles, Prefabricated concrete caisson wharfs, Submarine outfalls, Marinas.

Since July 2015, CYES maritime division becomes part of Rover Alcisa Group as CYES Maritime Works, sharing his expertise in the maritime field and taking advantage of the technical and financial strength of a Group in the height of its expansion and growth.

Quality and Environment

The work is always done with the quality, safety and respect for the environment that characterise us. Not surprisingly, some of our work has been recognized with awards and accolades from bodies and specialized agencies.

There are several factors that have led to Cyes’ Maritime Works Management being recognized for this business strength: a high level of technical capability, the quality of their staff, a suitable policy of investing in auxiliary resources, specialized machinery and technology.

Human Resources

In Cyes Maritime Works, human capital is what makes the difference. We continuously train the multidisciplinary staff made up of professionals in the field of engineering, planning and economics. This is a team working in collaboration with external experts to ensure the success of each and every one of the projects carried out.

Our staff is organized around these departmental areas:

  • The Construction Department
  • The Fleet Department
  • Technical Office
  • The R & D Department 
  • The Quality and Environment Department
  • The Financial Department 


Join Us:


Our company is currently in the process of international expansion, with major projects underway. "If you are interested in developing your career in the international area or already have experience abroad, and also, possess language skills, join us."


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