The first batteries at Browndown were erected on the shore at Browndown Point to the west end of Stokes Bay at Gosport to defend the western approach to Portsmouth harbour and to prevent an enemy landing on the beach. These batteries were known as Browndown Battery East and Browndown Battery West. They were complete by 1852 but were heavily criticised by James Fergusson (who was later to become the Treasury Representative on the 1860 Royal Commission into the defences of the United Kingdom) in his papers The Peril of Portsmouth and Portsmouth Protected. According to an armament list of 1860 Browndown Battery East had positions for three 68pr of 112 cwt. and seven 8-inch smooth bore guns of 65 cwt. whilst Browndown Battery West had positions for three 68pr. and eight 8-inch smooth bore guns