FUSION™ A Marine Fuel Accountability & Management System -The FUSION system is an advanced purpose-built Marine Vessel Fuel Accountability and Management System that provides a means to accurately measure, record, report and display the fuel consumption and fuel efficiency of marine vessel diesel engines. -FUSION is designed to measure the net fuel burned of two main propulsion engines, with an option to measure fuel consumption of up to two generator engines. Further engines, such a bow thrusters, can be accomodated by adding another system.