microfiche form at most supply centers. You must use DD Form 1348 in the MILSTRIP format to request classified instructions. Classified instructions are not usually issued to “all ships and stations.” NPFC, Philadelphia, is the primary stocking point for departmental (Navy) instructions. For those instructions not stocked at NPFC, the CSI is marked with an asterisk (*) to indicate the instruction must be requested from the originating office or sponsor. The NPFC does not stock instructions issued by the Naval Intelligence Command or the Chief of Naval Education and Training; these activities can provide you copies of their directives upon written request. STANDARD NAVY DISTRIBUTION LIST The Standard  Navy  Distribution  List  (SNDL) provides proper addresses and distribution for mail to activities of the Department of the Navy. The SNDL has 2 parts: Part 1 and Part 2. SNDL, Part 1, “Operating Forces of the Navy, Unified and Specified Commands, U.S. Elements of International  Commands,”  OPNAV  P09B2-107, contains the mailing addresses of only those activities authorized by the Chief of Naval Operations, the Commandant of the Marine Corps, or higher authority. SNDL, Part 2, “Catalog of Naval Shore Activities,” OPNAV P09B2-105, is the Navy’s official listing, including the echelon of command or supervision of all shore activities of the Department of the Navy. It also contains  the  addresses  and  distribution  listing requirements (number of copies or directives that should be provided automatically) for Department of the Navy activities. Directives Issuance System Consolidated Checklist Every instruction distributed to an activity listed in the SNDL is listed in the Directives Issuance System Consolidated Checklist, NAVPUBINST 5215.3Z. You can identify directives for which your unit is on distribution by using the appropriate version of the checklist. OPERATIONAL DIRECTIVES Broadly speaking, an operational directive includes any communication that initiates or governs actions, conduct, or procedure. Usually it is a military communication in which policy is established or a specific action is ordered. It maybe transmitted by any appropriate means of communication and should be in a format, language, or style familiar to both the originator and the recipients. An operational directive usually consists of a basic operation order (OPORD) and its supporting annexes. It may be contained in a series of general operating (OPGEN) or operational tasking (OPTASK) messages. Type of operational directives in common use by the Navy include operational plans (OPLAN); OPORD, OPGEN, and OPTASK messages; warning orders; and letters of instruction. Joint  Operational  Planning Systems (JOPS), volume 1; APP-4, Allied Maritime Messages; and certain NATO agreements prescribe standard formats for all of these messages except letters of instruction. Since the success of any operation depends on the shared understanding of all participants, directives must be prepared in a prescribed format. OPERATIONAL PLAN Official  Correspondence Official correspondence intended for an activity should be addressed to the official in command or supervision at the address listed in the SNDL, Part 2, “Catalog of Naval Shore Activities.” The address of official correspondence for activities listed in the SNDL may be followed by the title or code designation of the office having immediate responsibility for the subject matter of the correspondence; for example: Commanding Officer Naval Education and Training Program Management Support Activity (Code 0318) Pensacola, FL 32509-5000 An operational plan (OPLAN) is a plan for a single operation or a series of connected operations to be carried out simultaneously or in succession. The term plan is usually used instead of order to refer to preparations  for  operations  well  in  advance.  An operation may be put into effect at a prescribed time or upon the use of a certain signal; it then becomes an operational  order. OPERATIONAL ORDER An operational order (OPORD) is a directive a commander issues instructing subordinate commanders to execute a coordinated operation. Unless otherwise stated, an OPORD is effective from the date and time it 8-7