@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:related . skos:related . skos:altLabel "Datawell waverider" , "Datawell waverider"@en ; skos:broader , ; skos:definition "A directional waverider buoy comprising a heave-pitch-roll sensor, two accelerometers and a 3-axis fluxgate compass in a 90cm diameter spherical buoy that measures waves using a translational principle so that horizontal motions rather than wave slopes are measured making the measurement independent of buoy roll motions. A single point rubber cord vertical mooring ensures adequate symmetrical horizontal buoy response to resolve small motions at low frequencies. Data are transmitted to a shore based station and/or an Argos satellite. Three versions of the buoy designated MkI, MkII and MkIII have been produced with evolving internal electronics but fundamentally the same design. More information may be found at http://www.bodc.ac.uk/data/documents/nodb/65329/"@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL0268" ; skos:note "accepted"@en ; skos:prefLabel "Datawell directional waverider buoy"@en ; skos:related . skos:narrower . skos:narrower .