On board the Type 81 general purpose frigate Eskimo (1961) in No. 3 basin in Chatham Dockyard during her 1971-1974 modernisation. The photographer is looking forward and to port from 36 station on the starboard side of 1 deck showing the 4.5 inch Mark 5 Mod 2 gun mounting with the rear canvas screens tied back to show the loading, training and elevating arrangements of the gun. Two Royal Marines are on the forecastle and the union flag is at the jackstaff. The ship is berthed port side to the south wall of the basin.