Having read it this seems a very interesting narrative https://www.cnrs-scrn.org/northern_mariner/vol07/tnm_7_2_41-50.pdf On 23 December, ONS-154 encountered heavy weather, which scattered the ships; but with the exception of two merchantmen, the convoy soon reassembled. On 26 December, just as U-boats intercepted it It seems the 26th December 1942 was the date when the U Boats intercepted the convoy TD The Battle of ONS-154
