RRS Shackleton S3/80 Leg 6

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Shackleton (74SF)
Cruise identifierS3/80 Leg 6
Cruise period1980-07-05 — 1980-07-16
Port of departureSunderland, United Kingdom
Port of returnDundee, United Kingdom
ObjectivesTo complete a 15km grid between latitudes 56 and 57N from the Scottish coast to the median line, covering the Tay Forth, Marr Bank, Devil's Hole and Fisher sheets of the IGS 1:250 000 amp series. Secondary objectives were to survey along the track of a digital sparker line in the Fisher/Forties area which had been shot for IGS earlier in the year by Gardline Surveys Ltd to clarify earlier geophysical work in the Bosies Bank/Caithness area.

Lines 1-11 totalling 1114km were surveyed. The gravity meter operated well providing good results. Limited data aquired on this leg.
Chief scientistGeoff A Day (Institute of Geological Sciences, Edinburgh)
Coordinating bodyNERC
Cruise reportRRS Shackleton S3/80 Leg 6 cruise report shackleton3_80leg3.pdf (0.76 MB) 
Ocean/sea areas 
GeneralNorth Sea
Track chartsRRS Shackleton S3/80 Leg 6 cruise track — trk2473.html
Geology and geophysics 
Single-beam echosoundingQuantity: track kilometres = 1114
Description: geophysical survey
Long/short range side scan sonarQuantity: track kilometres = 6541
Description: "UDI"dual channel side scan system;3029nm Transit Sonar
Single channel seismic reflectionQuantity: track kilometres = 2511
Description: format 0:Seismic analogue paper record
Seismic refractionQuantity: track kilometres = 6888
Description: Sparker;1734nm Airgun;3352nm Boomer;1769nm Watergun
Gravity measurementsQuantity: track kilometres = 7365
Gravity measurementsQuantity: track kilometres = 1114
Description: geophysical survey
Magnetic measurementsQuantity: track kilometres = 6569