This report embraces a number of conventional propulsion methods and fuels and also addresses the newer options of biofuels, liquid natural gas and hydrogen. In the case of other propulsion options, the subjects of nuclear propulsion, alternative fuels, batteries, fuel cells, renewable energy, superconducting electric motors and hybrid propulsion are considered. Additional propulsion influences are addressed and include conventional and non-conventional propulsors, magnetohydrodynamic propulsion, energy-saving devices, hull design and coatings.