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The naval island is where the Navy developed the Higgins boat — the pivotal landing craft that ferried troops to the beaches of Normandy during the D-day invasion.

But after stormy weather in late May, four landing craft involved in the operation broke loose and were washed ashore.

As D-Day approached, Lamb was assigned the task of creating charts for the landing craft crews who would deliver troops to the Normandy beaches.

There she created maps for the landing craft that were central to the amphibious attack.

Army Air Force experts forecast that good weather would continue, Britain’s Meteorological Office predicted high winds that could swamp landing craft and thick cloud cover that would hamper air operations.