Many of the posters for Christopher Nolan’s war-rescue picture Dunkirk have been of the super-wide banner variety. Here is a classic vertical design (and nothing gives a vertical impression than a sailboat) that emphasizes the scope and chaos through depth of field rather than panorama. There are a lot of elements and things to see here, shadows of air planes, fishermen working frantically, soldiers drowning in the water, or floating on objects. The fire offers a few flashes of colour in an otherwise desaturated ‘grim seas’ palette. It is also noteworthy that the IMAX specialty releases of films tend to be a bit more adventurous with their poster designs, probably because they are not distributed as widely.