In a National Archives ADM file I found the following statement: The present organisation for obtaining weather reports from H.M. ships, other than those specifically detailed for meteorological duties, is laid down in Art.94 of A.F.O. S2/44. I'd very much like to see this reference but before I attempt to chase it down could anyone tell me what "Art.94 of A.F.O. S2/44" means? I assume S2/44 is the serial number of the order written in 1944, but what about the 'Art' and 'A.F.O'.? Probably a very simple answer but I'm afraid I'm not a Navy man.