The icons below are linking with maps indicating the clearance for boats with a mast of the value displayed on the icon. You can create your own map by using the spreadsheet below to enter yourt specific mast height.

You can open the spreadsheet below and enter the clearance height for your mast in the tab parameter. The tab "Data" shows an updated list of bridges and power lines with the relevant clearance messages. The list is relateively exhaustive for the Baltic side of Sweden and for the Lofoten. However, other Baltic countries are covered in a very limited way for now. Beware that there can be errors in the value indicated despite extensive checking.