A model of the planned extension of the western breakwater at Port of Hirtshals – one of the most crucial fishing hubs in Denmark – is now undergoing tests at Aalborg University, where engineers are simulating wave conditions equal to the strongest storm in a hundred years.
The aim is to ensure the structure can withstand extreme weather before Construction begins.
Testing the Breakwater
The tests take place in a large wave basin at the university’s Department of Construction, City and Environment.
Here, two scale models of the breakwater have been built at a ratio of 1:46. Waves are generated to match conditions from calm seas to the most severe storm events.
The breakwater will reach a depth of up to 22 metres, equal to a seven-storey building. It must handle strong westerly winds, powerful currents and high waves that are common on Denmark’s west coast.
Research and Engineering Combined
The tests provide critical data on how stone and concrete blocks should be positioned to ensure the structure is both stable and cost-effective.
The first model represents the outer section, where wave pressure is strongest. In contrast, the second focuses on the inner part, where waves may hit at angles of up to 45 degrees.
Researchers expect the work to generate valuable scientific insight, as exposed west-coast harbours are among the most demanding to design.
Towards Construction
The harbour plans to begin Construction of the breakwater extension around late 2026 or early 2027. The first phase of the wider port expansion is expected to be completed before 2030.
The entire project encompasses a new entrance channel, expanded quay areas, and space for both ferry operations and industry.