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Report | May 14, 2025

Evaluation of the Spare Parts Onboard U.S. Navy Ships in the Indo-Pacific Region (Report No. DODIG-2025-100)

Evaluation

The objective of this evaluation was to assess the effectiveness with which the U.S. Pacific Fleet managed spare parts required on forward-deployed ships in the Indo-Pacific region. Specifically, we reviewed ships’ annual inventory results, performed an inventory review, and assessed Navy personnel’s understanding of the process for the Coordinated Shipboard Allowance List (COSAL) feedback report.

Effectively managing spare parts carried onboard Navy ships is important to successfully complete a ship’s mission. The COSAL defines a ship’s allowance for spare parts required to operate and maintain systems and equipment onboard. The COSAL enables the ship to have a self-supporting capability for 90 days without replenishing the spare parts.