@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:narrower . skos:member . skos:narrower . skos:narrower . skos:related . skos:narrower . skos:altLabel "NMFSS Multi-Channel Airgun" , "NMFSS Multi-Channel Airgun"@en ; skos:broader , , ; skos:definition "A NMFSS-built multi-channel seismic reflection profiling system. The system uses a Bolt 1500C airgun as sound source, and a hydrophone streamer of 1 km in length."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL1197" ; skos:note "accepted"@en ; skos:prefLabel "National Marine Facilities Sea Systems (NMFSS) Multi-Channel Airgun Seismic Reflection System"@en ; skos:related . skos:related . skos:narrower . skos:narrower .