The ships are planned to have a 3:2:1 manning concept. That is three ship crews, and two hulls for each ship that is on station at any time. The other ship and other two crews who are not on deployment will either be preparing for deployment or in rotation in or out of theater. The result is a 50% reduction in ships and a 25% reduction in crews (and smaller crew sizes) than traditional deployment practices. The ships were predicted to fall short in manning. The Navy has deployed ships with berthing modules in the mission bays in order to carry the crew required for operations. However the ships are designed with sufficient headroom to change from 2-high bunking to 3-high bunking, which would allow crew sizes of 100 if needed.