GAO found the average O&S cost per steaming hour-used to measure the cost to provide operational steaming hours-across the 10 ship classes increased from fiscal year 2011 to 2020. Collectively, the number of steaming hours for the ships declined over the timeframe.Ĭhange in Costs and Number of Ships Over Time The Navy also added about 33 ships to these classes. Total O&S costs increased by about $2.5 billion from fiscal years 20 for the 10 ship classes GAO examined, including a $1.2 billion increase in maintenance costs. Therefore, cannibalization trends begin fiscal year 2015.īThe first America class amphibious assault ship was commissioned in 2014, so readiness trends for this class reflect fiscal years 2015 through 2021. Note: The above are numbers and not percentages and are rounded to the nearest whole number.ĪCannibalization data for fiscal years 2011 through 2014 is incomplete. Additionally, the Navy is not fully or accurately tracking other metrics-operational availability and materiel availability-that the Department of Defense and the Navy have determined are key to assessing ship effectiveness despite a prior GAO recommendation to do so.Ĭhanges in Sustainment Metrics per Ship across Selected Navy Ship Classes, Fiscal Years 2011 through 2021 ![]() ![]() Specifically, the number of maintenance cannibalizations (working parts removed and reused elsewhere due to parts shortages), casualty reports (reports of events that impair ships’ ability to do a primary mission), and days of maintenance delay (days beyond the scheduled end date for depot maintenance) have each increased, while steaming hours (the number of hours a ship is generally in an operating or training status) have decreased. GAO reviewed key sustainment metrics for 10 ship classes and found that from fiscal years 2011 through 2021, these classes faced persistent and worsening sustainment challenges.
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