If you need to travel some distance from the coast, you can now use coordinate search to find weather forecasts for locations at sea. This is made as a replacement for the sea and coastal forecast on the old website that have now been shut down.
1. Expand the search field in the top right corner of the page
2. Enter coordinates. For example. 70,041, 17,044.
3. You can now choose coordinate from the search list and get a weather forecast for that location. If you want to see wave height, sea current and water temperature (in graph), then you can press the "Coast" tab at the top of the window. Here you can choose between overview, graph and table.