In December there was reconsideration of whether to continue with Operation Pluto. By this time Antwerp was unloading an ocean-going tanker a day, and coastal tankers were delivering 2,500 to 3,000 long tons (2,500 to 3,000 t) per day to Ostend, and a similar amount to Rouen. On the other hand, only Antwerp and Cherbourg were capable of handling the large tankers, but Antwerp was under attack from V-1 flying bombs and V-2 rockets, and it was considered inadvisable for it handle more than one tanker at a time.