@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:S04::S04425" ; dc:date "2016-05-01 16:52:30.0" ; dc:identifier "SDN:S04::S04425" ; pav:authoredOn "2016-05-01 16:52:30.0" ; pav:hasCurrentVersion ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:versionInfo "1" ; skos:altLabel "" ; skos:broader ; skos:definition "A device for measuring height and period of sea-surface waves with two accelerometer and pressure sensor (inlet 1-2 m below the waterline) pairs mounted either side of the hull of a ship. The accelerometers measure vertical movement of the ship as it tries to follow each wave and the pressure sensors measure change in water height along the hull due to the ship's failure to follow the wave accurately. Combining the two gives the true wave height. Sensor pairs allow correction for rolling. Deployed on a package of instruments or sensors as the second sensor of this type."@en ; skos:notation "SDN:S04::S04425" ; skos:note "accepted"@en ; skos:prefLabel "shipborne wave recorder (second sensor)"@en ; skos:related .