The present document covers activities carried out by and under the auspices of the Joint Panel on Oceanographic Tables and Standards (JPOTS) over the period of 1983-1986. The first part is the report of the Chairman of JPOTS on the activities of the Panel during the period 1983-1985. Two major topics were considered by the Panel: (1) the production of Volume 4 of the International Oceanographic Tables, covering properties derived from the International Equation of State of Seawater (EOS-80); (2) the study of the thermodynamics of the carbon dioxide system in seawater. In addition, matters concerning nomenclature and the updating of information for oxygen saturation calculations were considered. The second part is a summary report of the first meeting of the JPOTS Editorial Panel on the Oceanographic Manual, which took place in Moscow, from 30 June to 4 July 1986. It gives the plans and contents of the proposed "Manual on Processing of Oceanographic Station Data." (Author)