RRS Shackleton S3/80 Leg 1

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Shackleton (74SF)
Cruise identifierS3/80 Leg 1
Cruise period1980-04-21 — 1980-05-06
Port of departureSouth Shields, United Kingdom
Port of returnHull, 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.

Equipment trials were conducted. After the completion of the trial lines 1-8 were surveyed. Data quality was good despite poor weather.
Chief scientistA Dobinson (Institute of Geological Sciences, Edinburgh)
Coordinating bodyNERC
Cruise reportRRS Shackleton S3/80 Leg 1 cruise report shackleton3_80leg1.pdf (0.70 MB) 
Ocean/sea areas 
GeneralNorth Sea
Track chartsRRS Shackleton S3/80 Leg 1 cruise track — trk2470.html
Geology and geophysics 
Single-beam echosoundingQuantity: number of track lines = 8
Description: geophysical survey
Long/short range side scan sonarQuantity: track kilometres = 1824.22
Description: "UDI" dual channel side scan system;2340nm Transit Sonar
Single channel seismic reflectionQuantity: track kilometres = 4333.68
Description: Pinger
Seismic refractionQuantity: track kilometres = 4183.668
Description: Sparker;2286nm Airgun;1059nm Boomer Format 0 =seismic analogue paper record.
Gravity measurementsQuantity: track kilometres = 4333.68
Magnetic measurementsQuantity: track kilometres = 4333.68