HMS Berkeley Castle (K387) HMS Berkeley Castle (K387) HMS "Berkeley Castle" was a Castle-class corvette of the United Kingdom's Royal Navy. She was named after Berkeley Castle in Gloucestershire. The Castle-class corvettes were an improved and enlarged derivative of the earlier Flower-class corvettes, which was intended to be built by shipyards that could not build the larger and more capable frigates. The greater length of the Castles gave made them better seaboats than the Flowers, which were not originally designed for ocean escort work. Large numbers (96 in total) were ordered in late 1942 and early 1943 from shipyards in the United Kingdom and
Tibbers Castle such as lime. The "Mote de Tibbris" is mentioned in the "Registrum Magni Sigilli" in 1489 and 1541. The interpretation of Tibbers has changed over time, and in the 18th century it was thought to be a Roman fort though it was later understood to be a medieval castle. The name of the castle led to the suggestion that it derived from Tiberius Caesar, however 'Tibbers' comes from the Gaelic word 'Toibar' meaning a well. The earliest recorded excavation at Tibbers Castle took place in 1864, which recovered two coins from the reign of Edward II of England (1307–1327) and