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Bill Stranges Colleen Adamson Andrea Nowicki Deanna Ohwevwo June 2002

Outline. PurposeApproachDD-963 class characteristics Data scrubbingResultsSummary. Purpose. Determine if Annual Ship Maintenance Expenditures are Correlated to Ship Aging for the DD-963 Class of Ships. . . Example of Ship Life Cycle Cost Decomposition. . PROD*- 37% . . . . MISSION PERSO

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Bill Stranges Colleen Adamson Andrea Nowicki Deanna Ohwevwo June 2002

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    2. Outline Purpose Approach DD-963 class characteristics Data scrubbing Results Summary

    3. Purpose Determine if Annual Ship Maintenance Expenditures are Correlated to Ship Aging for the DD-963 Class of Ships

    4. Example of Ship Life Cycle Cost Decomposition

    5. DD 963 Class Characteristics Background 31 ships in class All built at Ingalls Shipbuilding First ship in class commissioned in FY75 Several ships forward deployed to Japan DD-966, 972, 975, 985, 991 Maintenance data from VAMOSC (FY84-FY00) Organizational level (O-level) maintenance costs Intermediate level (I-level) maintenance costs Depot level (D-level) maintenance costs

    6. DD 963 Class Characteristics History 1984 DD-974, 976, 979, 983, 984, 986, 990 received Armored Box Launchers (ABL) to launch Tomahawk Cruise Missiles USS Olendorf (DD 972) becomes forward based in Yokosuka, Japan 1986 Vertical Launch System (VLS) was retrofitted to the 24 ships without ABL 1988 USS Fife (DD 991) becomes forward based in Yokosuka, Japan 1990s Persian Gulf War and maintenance of the Iraq No-Fly Zones scrambles the operational tempo of all ships 1990 USS Hewitt (DD 966) becomes forward based in Yokosuka, Japan 1991 USS Olendorf (DD 972) returns from Yokosuka, Japan to San Diego

    7. DD 963 Class Characteristics History (continued) 1992 USS OBrien (DD 975) becomes forward based in Yokosuka, Japan 1996 Condition-based maintenance philosophy began USS Fife (DD 991) returns from Yokosuka, Japan to San Diego 1998 Ships with ABL, which were not upgraded to VLS due to budget constraints, were decommissioned USS Hewitt (DD 966) returns from Yokosuka, Japan to San Diego USS Cushing (DD 985) becomes forward based in Yokosuka, Japan 2001 DD-980 and 981 turned over to Naval Reserve Force

    8. DD-963 Class Characteristics Technical Parameters

    9. DD-963 Class Characteristics Major Weapons Systems

    10. DD-963 Class Characteristics Ship Homeports

    11. Approach FY84-00 VAMOSC data collected and analyzed Potential trends identified Secondary review yielded discrepancy in data VAMOSC source data repositories changed (3M) FY84-90 VAMOSC data removed Analysis performed using FY91-00 VAMOSC data

    12. Data Scrubbing Forward based ships were removed from analysis Depot data do not include cost of work done by Japanese Forward based ships have higher OPTEMPO DD-987 removed from data set due to major corrective maintenance problems O-Level maintenance in FY91 = $10.7M (class avg = $4.1M) I-Level maintenance in FY95 = $6.3M (class avg = $584K) I-Level maintenance in FY96 = $42.3M DD-973 and DD-992 removed from FY97 and FY93 data respectively due to being stuck in availabilities in Pearl Harbor DD-973 O-Level maintenance in FY97 = $9.1M DD-973 I-Level maintenance in FY97 = $954K DD-992 O-Level maintenance in FY93 = $14.2M

    13. Data Scrubbing (Cont.) Seven decommissioned ships removed from analysis Low or negative maintenance costs in last few years of ships lives Incomplete O&I maintenance data prior to FY91 3M system upgraded in FY91 Ships are all relatively the same Same hull structure, engineering, systems, OPTEMPO, maintenance schedule

    15. Maintenance Cost (O+I+D) Class Average

    16. Organizational Level Maintenance Cost Class Average

    17. Intermediate Level Maintenance Cost Class Average

    18. Depot Level Maintenance Cost Class Average

    19. Ship Age vs. O-Level Maintenance Cost FY91-00

    20. Ship Age vs. I-Level Maintenance Cost FY91-00

    21. Ship Age vs. D-Level Maintenance Cost FY91-00

    22. Summary No apparent correlation between ship aging and maintenance expenditures for corrective maintenance. Anecdotal information from NAVSEA PMS 400 indicates a backlog of repairs existing for DD-963 class of ships. Difficult to track. No meaningful metric to assess ships readiness and aging. Existing databases highly subjective. Please address additional questions to: Bill Stranges stranges.william@hq.navy.mil Colleen Adamson adamson.colleen@hq.navy.mil Andrea Nowicki nowicki.andrea@hq.navy.mil Deanna Ohwevwo ohwevwo.deanna@hq.navy.mil

    24. Life Cycle Cost Breakout

    25. O-level Maintenance Manhours Class Average (18 ships)

    26. I-level Maintenance Manhours Class Average (18 ships)

    27. SSN Age vs. O-Level Maintenance FY91-00

    28. SSN Age vs. I-Level Maintenance FY91-00

    29. Average Steaming Hours

    30. Average Steaming Hours Underway

    31. Average Steaming Hours Not Underway

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