Complex sentence: The AgustaWestland Merlin is the FAA's primary Anti-Submarine Warfare (ASW) helicopter, having replaced the Sea King HAS.6 in the role, is presently being upgraded from HM.1 to HM.2 standard and is deployed in various ships of the Royal Navy.
Split into simpler sentences: The AgustaWestland Merlin is the FAA's primary Anti-Submarine Warfare (ASW) helicopter, having replaced the Sea King HAS.6 in the role. It is presently being upgraded from HM.1 to HM.2 standard and is deployed with various ships of the Royal Navy.