demanded could be any number, depending on the quantity per request. High Limit— The maximum quantity of material to be on hand and on order to sustain current operations. It includes the sum of stocks represented by the operating level, the safety level, and the order and shipping time. It is equivalent to the requisitioning objective. Item Depth— The quantity of a particular item stocked. For example, if the allowance quantity of an NSN is 10, the item depth for that NSN is 10. Inventory management uses this term with stock levels; that is, when referring to the depth of all NSNs stocked by an activity. Item Range— The number of different items stocked. For example, if an activity stocks 7,000 different line items (stock numbers), the item range is 7,000. Low Limit— The stock position that signals the need to start a replenishment action. It includes the stocks represented by the safety level plus the order and shipping time. It is equivalent to the reorder point. Not Carried— Refers to items that the supply department does not stock. The supply department does not maintain stock records for these items. It is synonymous with the term not stocked. Not in Stock— Refers to items stocked by a supply department but not on board when the demand occurs. Order and Shipping Time— The anticipated (or advertised) time between order and receipt. Operating Level— The quantity of material (exclusive of safety level) required to sustain operations during the interval between successive requisitions. Normally, it is the difference in the quantity between the requisitioning objective (high limit) and the reorder point (low limit). Peacetime Operating Stock (POS) Item— Used by automated ships to identify items that have a relatively high issue rate. POS items experience a demand frequency of two or more in a period of 6 months, and continue to have at least one demand every 6 months afterwards. POS items require semiannual review of stock records to compute the new requisitioning objective. POS item is synonymous with the term demand-based item (DBI). SIM Item— The term SLM means selected item management. It is an inventory control principle for nonautomated ships. SIM items are those items that have experienced a frequency of demand of two or more within the past 6 months. SIM items also refer to items that have a predictable demand of two or more based on deployed or seasonal usage. SIM is similar to the criteria for POS and DBI used in automated ships. Reorder Point— The stock position that signals the need to start replenishment action. It includes stocks represented by the safety level plus the order and shipping time. It is the same as low limit. Requisitioning Objective— The maximum quantity of material to be maintained on hand and on order to sustain current operations. It includes the sum of stocks represented by operating level, safety level, and order and shipping time. It is the same as high limit. Safety Level— The quantity of material, in addition to the operating level, required to be on hand to permit continual operations. This is the quantity of material used as a buffer to reduce the number of not in stock (NIS) situations. Stockage Objective— The maximum quantity of material to be maintained on hand to sustain current operations. It includes the sum of stocks represented by the operating level and the safety level. STOCK CONTROL RESPONSIBILITIES AND FUNCTIONS Aboard ship, stock control is the nerve center of the supply department under the Shipboard Uniform Automated Data Processing System (SUADPS). The Naval Aviation Logistics Command Management Information System (NALCOMIS) used by aviation units also interfaces with SUADPS. The inventory control procedures used Moat are compatible with the 3-M reporting and OPTAR accounting requirements in the Navy. These are the 3-M reports as defined in OPNAVINST 4790.4 (ship’s) and OPNAVINST 4790.2 (series) for aviation. The Financial Management of Resources (Operating Forces), NAVSO P-3013-2, describes the OPTAR accounting and reporting procedures. RESPONSIBILITIES Stock control is responsible for the inventory control and management of all stock items in the custody of the supply officer. These are items located in supply department spaces or under the custody of other departments. Stock control processes all requisitions submitted manually or electronically by computer. Stock control posts transactions, such as receipts, issues, surveys, and inventory adjustments. Stock control also 10-2