A comprehensive summary of a survey on research into the theory and application of water-emulsified fuel is presented. Its potential impact on diesel, boiler, and gas turbine shipboard power plants is discussed in terms of fuel consumption, maintenance, emissions, and safety.Intermediate grade to heavy fuel oils emulsified with 6% to 10% water have the most potential for cost savings in shipboard propulsion systems. Maintenance is reduced in boilers and is significantly lower for all power plants. Water-emulsified fuel bums more cleanly and offers the potential for improved safety.

The Navy's bulk fuel storage system uses settling and stripping to eliminate waste water which reduces tank volume and waste fuel. A semi‐automatic stripping system was developed to recover the lost tank volume while maintaining clean fuel for issue. The stripping system removes contaminants by recirculating the fuel through a bank of filter/separators until issue limits of 0.01% water and sediment are reached. Development and field testing of the system at a tank farm site are described. Test results and recommendations for stripping system operating procedures are presented.