Multibeam swath bathymetry data were collected with a hull-mounted Kongsberg EM120 and EM710 echosounder during RRS James Cook cruise JC125 (Chief Scientist Veerle Huvenne) from August-September 2015. The cruise was conducted to map Whittard Canyon, a deep ocean canyon in the Bay of Biscay, in order to obtain a better insight in the biodiversity patterns, benthic habitat distributions and sediment transport processes of submarine canyons. The data were edited using Caris HIPS software by Catherine Wardell and gridded at 50 m spacing (EM120) and 10 m (EM710) in a WGS84 UTM Zone 29N projection. The vertical datum of the data is matched to mean sea level (MSL). They were exported as longitude-latitude-depth triples. Funding was provided by the European Research Council to CodeMap (Grant No 258482) and the UK's Natural Environment Research Council (NERC) to MAREMAP.
