A survey in 1623 by the castle's captain, John Burley, reported that the garrison comprised only four gunners and the captain, with the buildings in a "ruinous" state and the defences in need of repair; similar concerns were raised in 1625 and 1629.[23] Suggestions that a half-moon battery should be added to the defences were not progressed, but in 1632 the parapets were raised in height and further lodgings and a long room for stores were constructed within the castle.[24] Some of the stone used for this may have been reused from nearby Sandown, whose walls had been destroyed by the sea; before it was used at Sandown, the stone appears to have been taken from the local monasteries.[25]