The surrounding chalk cliffs have become known as the White Cliffs of Dover, and the narrow sea passage nearby – the Strait of Dover, known to the open water swimming world as the English Channel. The name of the town derives from the name of the river that flows through River Dour. The town has been inhabited since the Stone Age according to archeological finds, and Dover is one of only a few places in Britain to have a corresponding name in the French language, Douvres.
An English Channel swim distance is about 15 circuits of the harbour starting from the swimmers beach - to the Prince of Wales - To the Eastern docks wall - to the swimmers beach. 2620 yards (1.3 nautical miles). A 6-hour swim should be 6 - 7 or 8 circuits of the harbour depending on your speed.
Distances for the harbour swims
Prince of Wales pier to Swimmers beach = 520 yards
Swimmers beach to Eastern dock wall = 840 yards
Prince of Wales Pier to Eastern dock wall, direct route across the harbour = 1260 yards
Swimmers beach to Prince of Wales to Eastern Docks to Swimmers beach = 2620 yards (1.3 nm)
English Channel crossing is 18.6 mn ÷ 1.3 = 14.3 circuits of the harbour
Prince of wales to Eastern docks to Prince of Wales = 2500 yards (1.25 nm)
English Channel crossing is 18.6 mn ÷ 1.25 = 14.88 circuits of the harbour