BIO-Route turns complex environmental data into freely available maps, making it easier for shipping operators to see where marine life in Danish waters is most sensitive to shipping-related pressures.

Small changes to a ship’s route, speed or timing of operational tasks can help reduce pressure on marine life. But voyage planners need to know where those changes could matter most. Developed by DHI with Danish Shipping and supported by the Danish Maritime Fund, BIO-Route brings this information together in four environmental sensitivity maps covering inner Danish waters.

The four maps focus on the four major shipping pressures of noise, light, presence and discharge and can be used alongside existing route-planning systems to support informed, voluntary choices. They provide environmental guidance, not navigation restrictions.

Challenge

Solution

DHI began by looking at how shipping can affect marine life through vessel presence and movement, underwater noise, artificial light and discharges. The team then brought together public data from ICES, HELCOM, ESAS and Natura 2000 and translated it into four easy-to-read sensitivity maps.

To make different datasets comparable, the information was organised in a 5 × 5 km grid and converted into sensitivity scores, with red-listed species given extra weight. Three maps show areas of low, medium or high sensitivity. A fourth highlights where starting grey water release should be avoided where possible.

Available in standard file formats, the maps can sit alongside existing route-planning systems. They help operators consider options such as reducing speed, adjusting a route or changing night-time operations. They supplement official nautical charts rather than replace them.

Results

BIO-Route gives shipping companies a clearer view of where their operations may place pressure on marine life in Danish waters. The four freely available maps make complex environmental information easier to use during voyage planning and can support internal documentation of environmental considerations.

Most importantly, they give operators a practical basis for considering voluntary adjustments where these are possible.