@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . skos:altLabel "FAD" , "FAD"@en ; skos:broader , ; skos:definition "Any kind of permanent, semi-permanent or temporary structure designed to attract fishes (specially tunas) and used in ocean purse seine fisheries. FADs can be moored or drifting devices and consist of surface or sub-surface buoys or floats to which underwater ropes, lines or chains can be attached. The most sophisticated type can be equipped with an echo sounder to estimate the biomass under it, a GPS to locate the device, and either a VHF, Immarsat or Iridium connection to periodically send the information to the vessel which owns it."@en ; skos:inScheme ; skos:notation "SDN:L05::70" ; skos:note "accepted"@en ; skos:prefLabel "fish aggregating devices"@en . skos:narrower . skos:narrower . skos:narrower . skos:narrower . skos:member .