Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HMS Snowdrop was an Azalea-class sloop of the Royal Navy. Snowdrop was built at the yards of McMillan, and was launched on 7 October 1915. She served during the First World War. In 1918 she rescued the survivors from the liner RMS Carpathia, which had been torpedoed and sunk by U-55. Also that year she took the American destroyer USS Cassin in tow, after the Cassin had been damaged by U-61. Snowdrop survived the war and continued in service until being sold for breaking up on 15 January 1923 to the Unity Ship Breaking Company.