Poole: D-Day plaque on the Custom House

The plaque, on the side of SZ0090 : Poole: the Custom House facing the quay, states: "On 5th June 1944 over 300 craft left the quays of Poole for the Normandy landings." This sentence is written on three lines with the larger words OPERATION OVERLORD between them - this being the codename for the Battle of Normandy.