Sixth Fleet Combat Stores ship resupply model
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Authors
Bennett, Jeffery P.
Subjects
Inventory analysis
Logistics planning
Statistical distributions
Mathematical models
Theses
Logistics planning
Statistical distributions
Mathematical models
Theses
Advisors
Henderson, David R.
Date of Issue
1989-03
Date
March 1989
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
This thesis improves the method of determining inventory levels for commodities (provisions, high usage load list consumables, and ships store merchandise) managed by the Sixth Fleet on station AFS. Historical demand generated by ships deployed to the Sixth Fleet is used to develop two models, the Lognormal Model and the Point Estimate Model. Improvement is achieved by considering each item's variance in demand. The Lognormal Model computes sample standard deviations for each item and provides the more accurate results. The Point Estimate Model uses regression to estimate a standard deviation for groups of items. Although the Point Estimate Model is easier for hands-on users to understand it is no easier to implement. The two models are compared against current procedures using a second set of actual Sixth Fleet data to simulate six months of inventory activity. Satisfied customer demands are improved by five percentage points (from 93% to 98%) and end of the month contingency inventory reserves are improved by 30 percentage points (from 65% to 95%).
Type
Thesis
Description
Series/Report No
Department
Department of Operations Analysis
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
68 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.