 On 20 August, "U-156" captured the Canadian trawler "Triumph" southwest of Canso, Nova Scotia.They manned and armed the vessel, and used it in conjunction with the submarine to capture and sink seven other fishing boats in the Grand Banks area, before eventually scuttling her.On 25 September 1918 and in the following days, "U-156" failed to report that she had cleared the Northern barrage minefield between the United Kingdom and Norway on her return voyage to Germany.