RRS Shackleton S3/80 Leg 5

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Shackleton (74SF)
Cruise identifierS3/80 Leg 5
Cruise period1980-06-19 — 1980-06-30
Port of departureGreat Yarmouth, United Kingdom
Port of returnSunderland, United Kingdom
ObjectivesTo complete the geophysical survey of the Indefatigable and Spun sheets of the IGS 1:250 000 amp series in advance of a bottom sampling programme to be carried out by the Institute of Geological Sciences Marine Geology Unit later in the season, and to re-run several lines surveyed in 1979 on the Flemish Bight Sheet. The inshore limit of the survey was controlled by the 15m depth contour. A secondary objective was to run one line along a propsed pipeline route on the California Sheet.
Chief scientistA Dobinson (Institute of Geological Sciences, Edinburgh)
Cruise reportRRS Shackleton S3/80 Leg 5 cruise report shackleton3_80leg1.pdf (0.70 MB) 
Ocean/sea areas 
GeneralNorth Sea
Track chartsRRS Shackleton S3/80 Leg 5 cruise track — trk2471.html
Geology and geophysics 
Single-beam echosoundingQuantity: track kilometres = 1563
Long/short range side scan sonarQuantity: track kilometres = 1466
Description: "UDI"dual channel side scan system;301nm Transit Sonar
Single channel seismic reflectionQuantity: track kilometres = 1563
Description: Pinger
Seismic refractionQuantity: track kilometres = 1563
Description: Sparker;800nm Airgun
Gravity measurementsQuantity: track kilometres = 1563
Magnetic measurementsQuantity: track kilometres = 1406