HMS "Princess Beatrix" was a commando troop ship of the Royal Navy during the Second World War. Built as a civilian passenger liner in 1939, she was named the MS "Prinses Beatrix", after Princess Beatrix of the Netherlands, and operated by Stoomvaart Maatschappij Zeeland (SMZ) (The Zealand Steamship Company) between Flushing and Harwich, along with her sister ship, MS "Koningin Emma". After fleeing to Britain after the German invasion in 1940, she was requisitioned by the British Ministry of War Transport, renamed HMS "Princess Beatrix" and converted to a troopship at Harland and Wolff's yard in Belfast. During the war her main role was transporting British Commandos, and she participated in the Lofoten Islands Raid and the Dieppe Raid. She had the advantage of a high speed that allowed hit and run operations. Later designated as a landing ship, infantry (medium) she took part in the landings in North Africa, Sicily, Salerno, Anzio, and southern France. In 1946 "Princess Beatrix" was returned to her owners and continued to operate as ferry from Hook of Holland until 1969, when she was scrapped in Antwerp, Belgium.