may not be readdressed nor referenced in other narrative messages. SPECAT messages are handled only by those personnel who are authorized to view them as approved in writing by the commanding officer. NAVAL  WARFARE  PUBLICATIONS LIBRARY The naval warfare publications library (NWPL) is the   designation   assigned   to   that   group   of communications   and   operational   publications designated as part of the publication allowance for the command.   These   publications   contain   required procedures,  signals,  and  other  information  of  an operational or mission-essential nature. They may also include information involving safety. The NWPL provides  for  the  central  administration  and  maintenance of  communications  and  operational  publications. These publications include, but are not limited to: Naval  telecommunications  publications  (NTPs); Naval warfare publications (NWPs); Fleet exercise publications (FXPs); Allied tactical publications (ATPs); Allied exercise publications (AXPs); USN addenda to allied publications; and Miscellaneous allied publications. The  objective  of  central  administration  of  naval warfare publications (NWPs) is to ensure that these publications are correct and readily available for their intended use. Some NWPs contain information that is necessary  for  the  proper  performance  of  individual duties and is important for individual professional development.  Therefore,  NWPs  must  be  readily available for use by individuals with a duty-related need or a general professional need for the information. NAVAL  WARFARE  PUBLICATIONS CUSTODIAN The responsibility for managing the NWPL is assigned to an officer or senior petty officer who is responsible to the executive officer, department head, or  division  officer.  This  assignment  is  a  collateral  duty, and the person assigned is known as the naval warfare publications  custodian  (NWPC).  This  person  is responsible for the overall administration and security of the NWPL in accordance with the Naval Warfare Documentation Guide, NWP 0 (NWP 1-01). NAVAL  WARFARE  PUBLICATIONS LIBRARY (NWPL) CLERK The NWPL clerk is a person assigned by the NWPC. The clerk is responsible for the upkeep and maintenance  of  the  library.  The  NWPL  clerk  maintains all records and receipts in the central file, orders all necessary publications and changes thereto, and enters all  changes  and  amendments  to  publications  physically held in the NWPL. The clerk reports all matters of concern to the library custodian. NWPL ADMINISTRATION The NWPL custodian issues publications to holders and short-term users. A holder is a person who has permanent subcustody of a publication under the central control  of  the  NWPL.  The  holder  is  responsible  for maintaining the publication, entering all changes and amendments, and providing adequate security. A user is a person who checks out a publication for temporary or  short-term  custody. Signature  custody  and  disclosure  records  for classified material are maintained as required by the Security  Manual.  Signature  custody  of  unclassified publications is not required. However, the records of the  NWPL  should  provide  an  up-to-date  location  of publications that have been issued to holders or checked out to users. Where signature custody is not required, a locator card maybe used in place of a catalog card to check out publications to users. NWPL MAINTENANCE Several basic files are used in maintaining the NWPL. One is the custody file, which contains a NWPL  Catalog  Card,  OPNAV  Form  5070-11  (figure 2-11), for each naval warfare publication on allowance or on board. The purpose of this file is to maintain an up-to-date record of the holder and location of each publication. This record also helps keep track of entries and changes to the publication. The catalog card can also be used as a custody card and as a destruction record. When used as a record for security purposes, it must be retained as required by the Security Manual. The  administrative  file,  sometimes  called  the transaction  file,  contains  designation  letters  for custodian,  local  allowance/inventory  sheets,  the directives  file,  responsibility  acknowledgment  forms, 2-32