SS Radaas was a 2524-ton cargo steamship. She was built by and launched in 1890 as Marstonmoor for Moor Lines. She was sold to a Greek company in 1902 and renamed Athos Romanos, before being sold to Danish interests during the First World War and renamed Radaas. She was sunk by the German submarine UB-40 under the command of Oberleutnant Hans Howaldt on 21 September 1917.^[1] She was 18 miles west of Portland Bill en route from Tyne to Bordeaux when the torpedo struck her in the port side.^[2] The wreck lies on a sandy bed at a depth of 30 m at 50°34′13″N 3°4′50″W / 50.57028°N 3.08056°W / 50.57028; -3.08056.