Part I also lists the shipping code of the activity to which an unserviceable repairable must be shipped. Part II (fig. 7-7) lists the shipping addresses of designated repair activities (military and civilian contractors)  and  collection  points  to  which  the repairables are to be sent. As a work center supervisor or division supply petty officer, you must cooperate with the supply department by returning replaced parts. By doing that, you will help the fleet use assets more efficiently. Afloat Shopping Guide The   Afloat Shopping Guide   (ASG), NAVSUP P-4400, is another source used for identification purposes. It is designed to assist fleet and Navy supply support personnel in identifying an NSN for those items of supply which do not have a part/reference number. Descriptions and illustrations may be used to determine substitutions and applicable NSNs in the general hardware area. The  ASG  consists of seven volumes containing descriptive data and illustrations accompanied by alphabetic and NIIN indexes of the groups/classes. The NIIN index also indicates the availability of an item from the mobile logistics support forces. The ASG is updated annually, and each volume is reissued in its entirety every fourth year. Figure 7-8 shows a page from the ASG. Coordinated Shipboard Allowance List The   Coordinated Shipboard Allowance List (COSAL) is both a technical and a supply document. It is  technical  in  that  nomenclature,  operating characteristics, technical manuals, and so forth, are described  in   Allowance Parts Lists   (APLs)  and Allowance Equipage Lists   (AELs). It is a supply document in that the COSAL provides a complete list of all parts required to operate and maintain the equipment installed at all ship/shore activities. The  COSAL  is prepared for individual ship/shore activities. It lists the following: 1.  Equipment or components required for the ship/activity  to  perform  its  operational assignment 2.  Repair parts and special tools required for the operation,  overhaul,  and  repair  of  these equipments 3.  Miscellaneous portable items needed for the care and upkeep of the ship/activity The COSAL is based on equipment configuration data  contained  in  the  computerized  weapons  system file (WSF) at the Ships Parts Control Center (SPCC). The   WSF   includes   the   reported   equipment configuration  installed  on  each  ship  as  well  as  the individual   repair   parts   applicable   to   those equipments.   Configuration   information   for   the COSAL   must   be   precise.   Therefore,   the   initial establishment  of  a  configuration  database  must  be accurate.   Thereafter,   changes   resulting   from additions,  deletions,  or  modifications  of  equipments must be reported promptly. The quality of the COSAL is  only  as  good  as  the  equipment  configuration  data available   to   the   various   activities   involved   in   its development. 7-8 4320-00-057-0782 5365-00-200-5226 5950-00-237-7237 3030-00-269-9669 5841-00-323-0747 5841-00-323-0749 5305-00-433-9373 5365-00-514-0363 3020-00-967-4607 55599 556-3541-1 556-012-001 556 556-1137 556-1182 556-2332 556-3541 556-35-1246FW160P 2 62983 46859 16665 24161 46859 46859 46859 46859 01351 2 2 2 2 2 2 2 2 2 MCRL PART II NSN REF. NO. FSCM RNVC MRP3f0705 Figure 7-5. Master Cross-Reference List (MCRL), Part II