A survey conducted in 1603 recorded that Upnor Castle had 20 guns of various calibres, plus another 11 guns split between two sconces or outworks, known as Bay and Warham Sconces. The castle's armament consisted of a demi-cannon, 7 culverin, 5 demi-culverin, a minion, a falconet, a saker, and four fowlers with two chambers each. Bay Sconce was armed with 4 demi-culverin, while Warham Sconce had 2 culverin and 5 demi-culverin.Saunders, p. 11 Eighteen guns were recorded as being mounted in the castle twenty years later. The garrison's armament included 34 longbows, an indication that archery was still of military value even at this late date. By this time, however, the castle was in a state of disrepair. The drawbridge and its raising mechanism were broken, the gun platforms needed repairs, and the courtyard wall had collapsed. A new curtain wall had to be built to protect the landward side of the castle.Saunders, p. 13 The foundations of Warham Sconce were reported to have been washed away by the tide, and it appears that both sconces were allowed to fall into ruin.
