Within the shelter made by the floating breakwaters, the sunken block ships and the concrete Phoenix units, these pierheads rode up and down with the tide. From the pier heads floating on reinforced concrete pontoons, a bridge-like causeway made a roadway to the beach. Large ships were able to unload vital military supplies and troop reinforcements without running aground.

This part of the man-made harbor was a mammoth towing job for the tugs. Its Seabee ensigns and crews had all the pride of battleship sailors in their strange craft of 1944.

Seabees and Royal Engineers are depicted completing the installation of "spuds" in one pierhead while another loomed large in scale in comparison with the two old British battleships in the background.