Located directly below the Emergency B.O.P is a 37mm Anti Aircraft Gun emplacement. Although the position of the emplacement was known to veterans of the site and there was armament of some type there during the war years, the exact kind of weapon was not known. Recent investigations and references in the Public Records Office revealed that the weapon was a 37mm Anti Aircraft Gun. However, the type of gun was not stated, but according one expert it is likely to have been a 1lb “Pom Pom”.

This gun position was probably sited to serve two purposes. One as anti-aircraft defence and alternatively, being in an ideal position, a backup for the 6lb Hotchkiss Harbour Defence Gun, located further down the site. Although there was no coverage to the rear of the position against aircraft attack, it was sited admirably against low flying hit and run raiders which flew past its position attacking the shipping and harbour installations.

The Bofors AA gun and Rocket Projector on site would be useless on these occasions as they would be firing down on their targets and possibly endangering ships and installations. These guns would engage targets flying higher altitudes.