@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: . rdf:type skos:Concept ; dce:identifier "SDN:L22::TOOL0555" ; dc:date "2012-09-28 14:08:54.0" ; dc:identifier "SDN:L22::TOOL0555" ; pav:authoredOn "2012-09-28 14:08:54.0" ; pav:hasCurrentVersion ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:versionInfo "1" ; skos:altLabel "NOC torpedo towfish" , "NOC torpedo towfish"@en ; skos:broader , ; skos:definition "An epoxy resin-coated steel torpedo-shaped object designed to be towed alongside a moving ship at speeds of 1-12 knots. A teflon-lined tube runs through the centre of the fish and is connected to a pump on board the ship. Stabilising fins at the rear of the fish ensure that the sampling hose points forwards and that the fish maintains a roughly constant depth. The system is typically used for continuous, underway, clean sampling (e.g., trace metal studies) of near-surface waters."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL0555" ; skos:note "accepted"@en ; skos:prefLabel "National Oceanography Centre torpedo towfish water sampler"@en ; skos:related .