 The modular system also allows for most upgrades to be performed ashore and installed later into the ship, keeping the ships available for deployment for the maximum time.The latest U.S. deactivation plans means that this is the first time that the U.S. Navy has been without a frigate class of ships since 1943 (technically is rated as a frigate and is still in commission, but does not count towards Navy force levels).The remaining 20 LCSs to be acquired from 2019 and onwards that will be enhanced will be designated as frigates, and existing ships given modifications may also have their classification changed to "FF" as well.