Complex sentence: All Royal Fleet Auxiliaries are built and maintained to Lloyd's Register and Department for Transport standards current RFA ships are armed, typically with at least two 20 mm Oerlikon or GAM-B01 anti-aircraft guns and a number of 7.62mm L7 GPMGs.
Split into simpler sentences: All Royal Fleet Auxiliaries are built and maintained to Lloyd's Register and Department for Transport standards. Most RFA ships are armed, typically with at least two 20 mm GAM-B01 anti-aircraft guns and a number of 7.62mm L7 GPMGs.