Processed multibeam bathymetry grids from the Whittard Canyon and Haig Fras (JC166/7, 2018).

Multibeam swath bathymetry data were collected with a hull-mounted Kongsberg EM122 and EM710 echosounder during RRS James Cook cruise JC166 (Chief Scientists Veerle Huvenne and Maaten Furlong) June-July 2018. The cruise was conducted to map Whittard Canyon, a deep ocean canyon in the Bay of Biscay, and Greater Haig Fras, a Marine Conservation Zone, 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 50m spacing (EM122) and 10m (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 to CLASS (Climate Linked Atlantic Sector Science), the National Capability Single Sector Marine Research Programme by NERC.