 She was launched on 9 November 1944, and commissioned under the command of "Oberleutnant zur See" Siegfried Breinlinger, on 7 January 1945.Like all Type XXI U-boats, "U-3018" had a displacement of when at the surface and while submerged.She had a total length of (o/a), a beam length of , and a draught length of .