SS Verdala was a cargo and passenger steamship that was built in Scotland in 1913. Several times she changed owners and was renamed: as Mongolian Prince in 1917, Istok in 1928 and finally Maycrest in 1940. The ship served in the UK Merchant Navy in the First World War as Verdala and Mongolian Prince, and in the Second World War as Maycrest. She was in Yugoslav ownership from 1928 and was registered in Dubrovnik as Istok from 1928 until 1940.