The FUEL OIL Calculation Program - Version 2.0 This program is important for anyone responsible for the efficient operational management of boilers, fired heaters and diesel power stations. The program is designed to help with the calculation necessary for the quantity measurement of petroleum products and for the efficient handling and use of marine heavy fuels. While intended principally for ships staff it should also be found useful by those ashore in ship owners organizations, engine and equipment manufacturer, ship builder etc.