Oystermouth Castle, no, not that one...

Oystermouth Castle, no, not that one. 

HMT Oystermouth Castle, you fool. 

SA4 To those in the know.

Screw Steamer OYSTERMOUTH CASTLE built by Smith's Dock Company Ltd. in 1914 for Castle Steam Trawlers Ltd. 

Hired/Requisitioned by Royal Navy in 1917, and again in 1940.

1954 broken up by Ship Breaking Industries, Charlestown, Fife. 

What a life!

AI Overview:-

During World War II, the Royal Navy used a naval trawler named HMT Oystermouth Castle. It was a Castle-class trawler, a type of fishing boat converted for naval use, specifically for minesweeping and anti-submarine duties. The Oystermouth Castle was one of many trawlers requisitioned by the Admiralty and played a vital role in the war effort. 

Here's some more information about the Oystermouth Castle and Castle-class trawlers:

Royal Navy Service:

The Oystermouth Castle was commissioned by the Royal Navy in 1941 and returned to its owner in January 1946. 

Castle-class Trawlers:

These trawlers were built with a single vertical triple expansion reciprocating engine, one boiler, and one shaft, producing 480 ihp (360 kW). They typically had a speed of 10.5 knots (19.4 km/h; 12.1 mph) and a complement of 15, which could be increased to 18 with wireless equipment. 

Armament:

Castle-class trawlers were usually armed with a 76 mm (3 in) 12-pounder gun, some with a 57 mm 6-pounder gun, and some with a 102 mm (4 in) naval gun. 

Minesweeping and Anti-Submarine:

Trawlers like the Oystermouth Castle were vital for clearing sea lanes of mines and searching for and engaging submarines. 

Other Uses:

Trawlers were also used for harbor patrol, decoy ships, and other support roles. 

Oystermouth Castle's History:

The trawler was built in 1914 and was requisitioned by the Admiralty in 1940. It was initially registered in Swansea and later owned by various companies before being returned to its owner in 1946

Links:-

HMT OYSTERMOUTH CASTLE | Imperial War Museums

Naval Trawlers, Admiralty trawlers