The Mulberry harbours were to be used until the Allies could capture a French port, initially thought to be around three months. However, it was not until six months after D-Day that the Belgian port of Antwerp was captured that use of the harbour at Gold Beach lessened. It was used for 10 months after D-Day and over 2.5 million men, 500,000 vehicles, and 4 million tonnes of supplies were landed using it before it was fully decommissioned. The Mulberry harbour at Omaha Beach had been severely damaged in a storm in late June 1944 and was abandoned.
