treuil hydrographique

CONT: One of the smallest [oceanographic winches] is the bathythermograph winch. It is used to lower the bathythermograph, a recording thermometer capable of registering temperature against depth down to 900 feet. In shallow water the winch, with a specially designed device called a ""scoopfish"", takes small bottom samples. Mechanical current meters and vertical hand plankton nets are lowered from the bathythermograph winch.