The 1960's saw the installation of an efficient Calor Gas oven. Due to the storage capacity of 24v batteries the lighting often became very poor and Tilly lamps were used. The late 1960's and early 1970 saw a 240v system installed allowing bright lights and power to the computers. Havengore was the first survey craft in the country to use computers for data-logging. The computer was 16KB with 10 seconds of memory and the process involved miles of punched tape.
Photographs show the enormous floor to ceiling metal cabinets of switches, reels, and displays.
In 1989 new Unix workstations were installed to be replaced by PC's in 1993. In 1964 the jurisdiction of the P.L.A. was extended from the Warden Point-Havengore Creek line to include the Thames Estuary. Whilst most of this outer region was covered by S.V. Mappin, Havengore was upgraded from river operations to esturial work which required a sigificant amount of alteration externally in the shape of additional life saving equipment, mast lighting and 2 mile range steaming lights. The Authority had always been successful and efficient, despite difficult times during the war and labour negotiations most of it's life, business was good. As the years rolled on however, labour intensive industries could not escape the impact of modern machines and demands for increased efficiency and reduced costs.