UPNOR-CASTLE, (Kent) In Frendsbury, on the W. side of the Medway, almost opposite to Chatham-Dock, was built by Q. Eliz.
for defence of that r. which is the usual rendezvous of the greatest part of the royal navy. Its platform carries 37 guns,
that command 2 reaches of the r. and are supposed to defend all the ships that ride bet. that and Rochester bridge.