High Quality Content by WIKIPEDIA articles! SS Irma was a 1,322-ton steamship built by the British shipyard Sir Raylton Dixon & Co. Ltd. in Middlesbrough in the north-east of England. She was delivered to the Norwegian passenger ship company Det Bergenske Dampskibsselskab of Bergen in 1905. Irma sailed for the company until she was attacked and sunk by two MTBs belonging to the Royal Norwegian Navy on 13 February 1944.