CIMSEC – The U.S. Navy should pursue commercial containerships and compatible containerized mission systems. These ships and systems will allow the U.S. Navy to rapidly field new technologies, expand the maritime industrial base, grow the ranks of experienced seafarers, and provide surge capacity in times of national need. Containerships, as well as combination containership/roll-on roll-off vessels (ConRo), would allow the U.S. Navy to affordably procure a large number of hulls compared to typical naval warships, and open options to augment a range of missions. These ships would allow conventional combatants to focus their high-end capabilities on the highest priority missions, while augmenting many of their capabilities with containerized support. Containerships can act as valuable force multipliers and retain a significant amount of modularity in a time when conventional naval force structure is at risk of falling behind the rapidly evolving state of capability.