Do modern warships use separate fuels for diesel and gas-turbine engines?
Short answerUsually not; most use a common naval distillate compatible with both parts of the propulsion plant.
NotesNATO F-76 is identified as the fuel used by most of the NATO ships under discussion, with JP-5 mentioned as another possibility. Diesel engines and gas turbines generally use one compatible fuel blend in this account, rather than requiring a separate fuel for each type of machinery.