In the 50s, Victorian-style warehouses had come to an end with the invention of the pallet, and roll-on roll-off (Ro-Ro) services. In the 60s, containerisation followed – with new container ports opening in Felixstowe in 1967 and Hull in 1973. A ship went from spending two weeks in port to two days, and a port that needed 4000 workers in the 1950s would go on to need only 400.