The 111th Naval Construction Battalion (Seabees) was a U.S. Navy engineering unit specializing in construction in the heart of combat zones.
During Operation Overlord, the role of the 111th Seabees was crucial. They were responsible for the construction of artificial harbors, known as Mulberries, designed to facilitate the landing of troops and supplies on the beaches of Normandy.
Mulberries were a major innovation of the time, designed to compensate for the lack of port infrastructure in Normandy. Made up of floating caissons, these ports were deployed just after landing to enable ships to unload their cargoes without relying on traditional ports, which were often heavily defended by the enemy.
The 111th Seabees were deployed on Omaha beach, their task being to build and maintain Mulberry Port "B", located at Arromanches-les-Bains. Despite harsh conditions and enemy fire, the Seabees worked tirelessly to assemble the port's components and make it operational.
The 111th Seabees' deployment to Omaha Beach was marked by major logistical challenges. Construction work was carried out under constant German artillery bombardment.
Despite these challenges, the 111th Seabees managed to complete the construction of Mulberry Harbour within an incredibly tight timeframe. The port played a vital role in the success of Operation Overlord, enabling the rapid and efficient unloading of troops, vehicles and equipment needed to consolidate the Allied beachhead in Normandy.
The story of the 111th Seabees during the Normandy landings is a testament to the courage, determination and resilience of the men who served in this unit. Their contribution to the liberation of Europe during the Second World War remains an outstanding example of the impact of engineering work on military operations and the success of strategic missions.