More than any other Tudor castle, Upnor has close ties with the navy. It was built for the protection of Elizabethan warships anchored in the Medway, and its importance matched the growth of the dockyards at Chatham. The highlight of Upnor's history came in 1667 during the Second Dutch War when it played an important part in preventing a squadron of the Dutch fleet, which had already done considerable damage, from sailing further up the Medway. Softback guide, 36 pages