Complex sentence: The "Lekiu"-class frigates are the most modern surface combatants of the Royal Malaysian Navy, until the Second Generation Patrol Vessels are completed in 2017.
Split into simpler sentences: The "Lekiu"-class frigates are a class of frigates of the Royal Malaysian Navy. They are the most modern surface combatants of the Royal Malaysian Navy, until the Second Generation Patrol Vessels are completed in 2017.