sentences:  She also sank the on 11 November 1944 east of Andenes, Norway, off the Lofoten Islands.Her most famous mission, however, was her eleventh patrol out of the British submarine base at Lerwick in the Shetland Islands, under the command of 25-year-old Jimmy Launders, which included the first time in the history of naval warfare that one submarine intentionally sank another while both were submerged.Sent to the Fedje area, "Venturer" was then ordered on the basis of Enigma decrypts to seek, intercept and destroy which was in the area.