Long description
This is a map of the UK and part of the European coast with contour lines of wave heights in the sea around the UK. North Sea, contours join Scotland to Norway with speeds in the mid 20s (assume the units are m); this decreases moving south. In the English Channel, contours are from South of England to the European coast, with values of about 13 near Dover to about 20 near Devon. The contours are roughly along the coast for the west coasts of Scotland and Ireland, highest value is 35.