As you likely know, it’s the 75th anniversary of D-Day, when 160,000 Allied troops invaded the beaches of Normandy, undertaking the largest from-the-sea invasion in the history of human warfare and marking the beginning of the end for the Axis. The actual business of getting over 100,000 soldiers and a metric crapton of vehicles and equipment from the ocean on to land is a decidedly non-trivial problem, one that the Allies solved with a brilliant but simple patented plywood boat: the Landing Craft, Vehicle and Personnel (LCVP), also called the Higgins Boat.   The Higgins Boat, named after its inventor, Andrew...