Totally operational by the beginning of July, the Mulberry Harbour in Arromanches was to prove its worth during Montgomery's large-scale offensive against Caen later that month. During its busiest week, more than 18,000 tonnes of goods were unloaded each day.

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TotallyoperationalbythebeginningofJuly,theMulberryHarbourinArromancheswastoproveitsworthduringMontgomery'slarge-scaleoffensiveagainstCaenlaterthatmonth.Duringitsbusiestweek,morethan18,000tonnesofgoodswereunloadedeachday.