The Department’s failure to fund several key supporting capabilities will restrict how it can use the carriers for many years. The operational freedom of a carrier group relies on support ships providing munitions and stores where and when they are needed, and the Department has long understood that it will need three new support ships to provide this. However, in 2019 it cancelled a competition to build the new ships and it has not yet started a new one. In the meantime, the Department must rely on one elderly ship, RFA Fort Victoria, which has limited cargo capacity and is due to go out of service in 2028, to perform this role. Furthermore, it will need to make alternative arrangements to restock the carriers, such as using allies’ international bases, both when this ship undergoes maintenance in 2022 and when it retires. We are also concerned that the Department has not found a solution for other unfunded supporting capabilities since our 2018 report, such as a long-term solution to move people and goods to, from and within a carrier group. In addition, the Department will face other funding pressures as it replaces the ships needed to sustain carrier operations over the next 50 years, such as anti-submarine frigates. Recommendation: The Department should develop a plan setting out the investment required to develop essential supporting capabilities for a carrier strike group. This should include cost-benefit assessments of potential capability enhancements and how to maximise the value of investment to date. It should write to the Committee by June 2021 setting out its planned investment over the next 10 years. 8 Delivering carrier strike 1 Progress to-date