Royston wrote:Remember, Canterbury was a port, the River Stour opened onto the Wantsum Channel, a navigable sea lane.
The Isle of Thanet has a cluster of ports, seemingly purpose-built. Between Ramsgate and Margate there is an inviting-looking landing place, Kingsgate Bay.

A 'gate' is the name given to a cliff-gap or passage. The very striking rock arch at Kingsgate has a ring of rocks around it visible at low tide, hard to say whether this is natural or man-made. Perhaps it could be twinned with Etretat in Normandy.