RV Platessa tagged plaice were released off the Cumberland coast, using the RV "Platessa" during 1949 and 1950. In August 1951 echo-sounder traces were obtained over a wide area off Whitby by the RV 'Platessa', using a Marconi sounder. They were found to occur at a depth corresponding to that of a sharp thermocline, and small whiting about 3 in. in length, large Medusae, herring and sandeel larvæ were caught with a pelagic trawl at the depth of the trace. This work was reported in a ‘letter’ to the journal Nature in 1952. In 1950 the RV "Platessa" was involved in comparative
RV Platessa RV Platessa RV "Platessa" (LT205) was a fisheries research vessel that was operated by the Ministry of Agriculture, Fisheries and Food (United Kingdom) - Directorate of Fisheries, now known as the Centre for Environment, Fisheries and Aquaculture Science (Cefas) between 1946 and 1967. RV "Platessa" was based at the port of Lowestoft and was originally ordered by the Admiralty as one of 81 Motor Fishing Vessels (MFVs) in the ‘1501-Class’ during World War II. Motor fishing vessels were small wooden craft, built in large numbers during the war for use as Ship's tenders. Constructed as MFV 1576 by East Anglian