Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HMS Undaunted (R53) was an U-class destroyer of the British Royal Navy that saw service during World War II. She was later converted into a Type 15 fast anti-submarine frigate, with the new pennant number F53. HMS Undaunted had a long, distinguished and industrious career, which started soon after her launching and acceptance into the Fleet in 1944. Built as a Destroyer of 1,710 tons, most of her first ship''s company joined her in February 1944, after travelling by overnight troop train from Devonport Barracks.