AEROGftAPHSR'S MATE 3 & 2 



The forms and publications stock lists are 

 the basic guide as to what is current in the way 

 of meteorological publications, and should be 

 checked frequently, along with the supplements 

 issued thereto. 



CODES MANUAL 

 (NAVATR 50-1P-11) 



The Codes Manual is separated into two parts. 

 Part I contains World Meteorological Organiza- 

 tion (WMO) international codes for meteorological 

 data and other geo-physical data relating to me- 

 teorology. Part II contains a catalog of synoptic 

 broadcasts which includes information for marine 

 areas. The synoptic broadcasts are presented 

 by ocean basin. 



AIR ALMANAC 



The Air Almanac is produced jointly by the 

 Royal Greenwich Observatory and the United 

 States Naval Observatory, but is printed sepa- 

 rately in England and in the United States. The 

 purpose of the Air Almanac is to provide in a 

 convenient form the astronomical data required 

 for air navigation. 



Among other things, the Air Almanac per- 

 mits the computation of sunrise, sunset, moon- 

 rise, moonset, and twilight. The operations 

 required to compute the desired astronomical 

 data are given in the instructions in the book. 

 These instructions are simple, as are the pro- 

 cedures for computing the various data. No 

 special training is required. 



TIDE TABLES 



Tide tables are prepared by the National 

 Ocean Survey to furnish information on pre- 

 dicted times and heights of tides for each day 

 of the year at various locations (usually har- 

 bors and ports). These places are known as 

 reference stations. 



By applying certain corrections given in the 

 tables, the approximate times and heights of 

 tides may be determined for other locations. 



There are four volumes of tide tables cover- 

 ing the following areas: East Coast, North and 

 South America; West Coast, North and South 

 America; Europe and West Coast of Africa; 

 Central and Western Pacific and Indian Oceans. 

 These tables are revised annually. 



The tide tables can be ordered through the 

 Oceanographic Office. 



GUIDE TO STANDARD WEATHER 

 SUMMARIES, NAVAIR 50-1C-534 



The Guide to Standard Weather Summaries 

 is prepared by NWSD, Asheville.NC, by direction 

 Of DIRNAVOCEANMET. 



This publication provides a listing of pub- 

 lished and unpublished climatological summa- 

 ries available from the appropriate agencies in 

 the Federal Building, Asheville, NC. Copies of 

 any of the weather summaries described in the 

 Guide to Standard Weather Summaries, and copies 

 of published NOAA summaries, can be provided 

 to meet requirements of Navy activities. Re- 

 quests should be submitted in accordance with 

 information contained in the Manual of the Naval 

 Weather Service Command, to the Director, 

 Navy Oceanography and Meteorology, with a 

 copy to the Officer in Charge, Naval Weather 

 Service Detachment, Asheville. 



NAVY DIRECTIVES SYSTEM 



The Navy Directives System is used through- 

 out the Navy for the issuance of nontechnical 

 directive- type releases. Some of these pre- 

 scribe policy, organization, and methods, or 

 procedures; others contain general information. 

 This directives system provides a uniform plan 

 for issuing and maintaining directives. Con- 

 formance to the system is required of all Sys- 

 tems Commands, offices, activities, and 

 commands of the Navy. Two types of releases 

 are authorized under the plan— Instructions and 

 Notices. 



Information pertaining to action of a con- 

 tinuing nature is contained in Instructions. An 

 Instruction has permanent reference value and 

 is effective until the originator supersedes or 

 cancels it. Notices contain information per- 

 taining to action of a one-time nature. A Notice 

 does not have permanent reference value and 

 contains provisions for its own cancellation. 



For reasons of identification and accurate 

 filing, all directives can be recognized by the 

 issuing authority's authorized abbreviation, the 

 type of directive (Instruction or Notice), a 

 standard subject identification code number; and 

 in the case of Instructions only, a consecu- 

 tive number. Because of their temporary na- 

 ture, the consecutive number is not assigned to 



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