Better Estimation of Completion Times for Ships Undergoing CNO Availabilities
Abstract
United States Navy (USN) surface ships must complete routine maintenance, repair work or upgrades in order to maintain operations to support the fleet. However, a large majority of planned maintenance availabilities exceed their schedule and consequently decrease their readiness to support the fleet and negatively impact ship readiness and operational availability. The USN uses an Availability Duration Scorecard (ADS) to manually determine surface ship maintenance durations, but it does not accurately capture the complexity of the work required. There is a need for more accurate predictions using ADS that include a detailed evaluation of work performed, to include the complexity of specific tasks. This thesis conducts an analysis of the tanks and voids maintenance activity duration estimates for three classes of USN ships. Regression analysis is conducted on ships where the availability duration substantially exceeded ADS estimate. Regression shows no statistically significant relationship between the number of maintenance activities on tanks and voids and the total availability duration. Additionally, there is no statistically significant relationship between unplanned tanks and voids maintenance activities and the total availability duration.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2022
- Accession Number
- AD1201026
Entities
People
- Amy W. Lee
Organizations
- Naval Postgraduate School