AFE rectifier CO2 emissions DFE rectifier History of engineering & technology Hybrid test bed IMO GHG Kendall’s coefficient LCA LNG LNG-fueled ship MGO Molten carbonate fuel cell (MCFC) NOx emissions Operation profile Power quality SOx emissions carbon dioxide electric propulsion system failure mode and effects analysis fuel cell hybrid power source hybrid power system life cycle life cycle assessment (LCA), maritime environment maintenance costs marine fuel molten carbonate fuel cell (MCFC) phase angle detector propulsion system maintenance research vessel