Mulberry harbour the armoured vehicles would be able to operate on the beach or become bogged down. The final survey, Operation Bellpush Charlie, occurred on the night of 30-31 January but limited information was gathered due to fog and because German lookouts heard the craft. Further sorties were abandoned. On the afternoon of 6 June 1944 (D-Day) over 400 towed component parts (weighing approximately 1.5 million tons) set sail to create the two Mulberry harbours. It included all the blockships (codenamed Corncobs) to create the outer breakwater (Gooseberries) and 146 concrete caissons (Phoenixes). At Arromanches, the first Phoenix was sunk at dawn
Erwin Rommel at Calais. Although Hitler himself expected a Normandy invasion for a while, Rommel and most Army commanders in France believed there would be two invasions, with the main invasion coming at the Pas-de-Calais. Rommel drove defensive preparations all along the coast of Northern France, particularly concentrating fortification building in the River Somme estuary. By D-Day on 6 June 1944 nearly all the German staff officers, including Hitler's staff, believed that Pas-de-Calais was going to be the main invasion site, and continued to believe so even after the landings in Normandy had occurred. The 5 June storm in the channel seemed