1. The site comprises of a 3.7 inch gun emplacement with irregular octagonal plan, a flat concrete roof over shelters and lockers, and earth revetted. Gate in the east wall. Two detachment shelters and seven ammunition lockers are set into the walls. There is a concrete gun floor with recessed cable duct.

[Other gun emplacements and gun holdfasts are adjacent].

Record derived from Defence of Britain Project (Record Number 12175)

Showing the typical ?D? pattern layout of a Heavy Anti-Aircraft Battery, Gravel Bay defended the Milford Haven waterway in Pembrokeshire from Luftwaffe bombing raids. Constructed about 1942, each of the four gunpits had a 3.7 inch (94 millimetre) Mark II gun. The Command Post was a rectangular building, controlling the guns by means of a mechanical predictor to calculate the height and speed of approaching enemy aircraft. The topmost gunpit was oriented to allow the gun to be depressed for firing out to sea, doubling up as a beach defence gun. The remains of two light anti-aircraft holdfasts and thirty-five hut bases are located nearby. (Text from the forthcoming 'Historic Wales from the Air', RCAHMW, 2012).

2. Only a single gun emplacement is listed in the DoB, but the site remains in good condition. Four 1941 pattern gunpits and a standard command post exist.
Source: Steve Thompson, UK Pillbox Study Group, ref. e11335.
B.A.Malaws, RCAHMW, 15 April 2016.