3633. Methods Used for Tracking, Validating, and Reporting the Weight of Operating Space Items (OSI) and Storeroom Items (SRI)

Paper

Abstract

Many times, items are listed as ‘Items to Deduct’ during the Deadweight Survey, which, according to the Expanded Ship Work Breakdown Structure (ESWBS), are actually part of Lightship. Due to misconceptions and/or errors, the Deadweight Survey is not accurate when compared to the Mass Properties Reports. The largest confusion is with the definition of Operating Space Items (OSI), Storeroom Items (SRI), and General Use Consumable List (GUCL) items. Another issue is that OSI is most often completely missed in the early stages of a weight estimate and those items are also among the most challenging to get accurate weight values for. Weighing of these items is difficult as these are generally small items and have a high risk of being pilfered or 0damaged, and are therefore not loaded out until delivery. Although arriving late in the weight estimating schedule, getting accurate weights for the ‘little things’ that make the ship work will benefit the Deadweight Survey / Inclining Experiment, and will also yield valuable data for future parametrically generated weight estimates. This paper shows one method used to accurately capture the weight and the locations on the ships where these items will be.