The English Channel links the North Sea with the North Atlantic Ocean and most of the shipping to and from the Northern European ports passes through the Straits of Dover.  Add to this the hundreds of daily sailings from Dover to Calais and other nearby ports and the coastal trade around the UK, the Straits are one of the busiest waterways in the world.

This coastguard station on Langdon Cliffs monitors the shipping around the coast from Ramsgate to Dungeness, past the infamous Goodwin Sands and the Varne Bank.