1. Design

2. Operations

3. Replacement

4. Ships in class

5. References

The Castle class was a class of British offshore patrol vessels of the Royal Navy. Two ships were constructed. Both were transferred to the Bangladesh Navy in 2010.

Design

The Castle class was designed by David K. Brown and was intended as a series of six offshore patrol vessels for the Royal Navy, designed in response to criticism of the previous {{sclass2-|Island|patrol vessel|4}} for insufficient speed, sub-optimal sea-keeping and lack of a flight deck for rescue helicopters.

In the event, only two ships were built, {{HMS|Leeds Castle|P258|6}} and {{HMS|Dumbarton Castle|P265|6}}. Both vessels were built by Hall Russell in Aberdeen, Scotland. These had significant improvements over the Island class – they were 300 tonnes larger, more stable in heavy seas, {{convert|3|kn|km/h|lk=in}} faster and fitted with a large flight deck capable of supporting a Sea King. For brief periods, the ships could accommodate up to 120 troops.

Their primary mission was to serve with the Fishery Protection Squadron, protecting both the fishing fleets and the oil and gas fields of the North Sea. In addition, they could also serve as minelayers, and had detergent spraying facilities on board for dispersing oil slicks.

Operations

After the Falklands War, one ship was kept long-term in the Falkland Islands as a guard ship. Leeds Castle and Dumbarton Castle rotated the role on a three-yearly basis, although the ship's crew usually did a six-month rotation.

Replacement

The Castle class was replaced in the Falklands by a unique vessel based on the {{sclass2-|River|patrol vessel|4}}, {{HMS|Clyde|P257|6}}, and both vessels of the class were decommissioned. Originally due to transfer to the Pakistani Maritime Security Agency in 2007, the deal fell through and both ships were sold to the Bangladesh Navy.^[1][2][3]

Ships in class

References

• Conway's All The World's Fighting Ships 1947–1995
• D.K. Brown, "The Design of the Castle Class", a personal view in Warship 2006, Conway's Maritime Press
• Janes Fighting Ships 2007

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