The Type 22 frigate is a warship class of the Royal Navy also known as the Broadsword Class. Fourteen of the class have been built, however only four (Batch 3 ships) are now in service with the Royal Navy.
The Type 22 was designed at first to be anti-submarine warfare vessels as part of the Royal Navy's contribution to NATO. These ships since evolved into powerful anti-air, anti-surface and anti-submarine warships. There are currently three batches off the ship, four batch one, six batch two and four batch three.
Three planned units of the Hood class of battlecruiser and a class of 16-inch battlecruisers and 18-inch battleships - the G3 and N3 classes respectively - were cancelled.
New additions to the fleet were therefore minimal during the 1920's, the only major new vessels being the two units of the Nelson class of battleships and fifteen heavy cruisers of the County and York classes.
In the latter stages of the Cold War, the Royal Navy was reconfigured with three anti-submarine warfare (ASW) aircraft carriers and a force of small frigates and destroyers.