An Aqueous Film Forming Foam, which when proportioned at 6% with Fresh, Brackish or Seawater forms an aqueous film that flows rapidly across the surface of a Hydrocarbon Fuel (Class B risk) and inhibits the vaporization of the fuel and cools the fuel surface extinguishing the fire preventing re-ignition. Can be freeze protected down to -10°C and is approved to EN1568, ICAO and IMO. Its low surface tension enables an easy flow and quick put out.