Formally called Queen Anne’s or Queen’s Battery, it mounted twelve guns in 1727. After the Great Siege it was renamed after Princess Charlotte, eldest daughter of George III who then became Princess Royal. The old Princess Royal battery was located near the entrance to the Middle Galleries. The plan of the battery was fan-like and from 1834 -1859 it mounted nine 24-pdrs, but by 1863 it had two 7 -inch RBLs and seven 32 pdrs. There were five 64-pdr. RMLs in 1885 and three in 1889. Later it became one of the 6-inch BL positions. In 1886 it was proposed to install one 6-inch BL Mark IV and the emplacement is shown on a drawing dated January 1895. The BW photograph opposite dates back to November 1903 and shows the 6-inch BL MK. VII gun. In 190 I the approved armament was for two 6-inch guns, one with a range of 6,000 yards to fire on Spanish land batteries and one with a range of 12.000 yards to bear on eastern or Mediterranean waters. Work was eventually commenced on a barbette emplacement for one 6-inch BL MK. VII gun on 21 July 1902 and this was completed by 24 May 1904 at a cost of £2.291. In December 1915 yet another 6-inch BL MK. VII gun was installed and remained there until possibly 1924-5. These colour photographs show the the site in 2005.

The emplacement has underground bombproof shell and cartridge stores as well as shelter for the gun crew.

Click here for underground layout