Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

Sperus 4/76

Cruise summary report

Cruise Info. 
Ship name (ship code)Sperus (74TJ)
Cruise identifier4/76
Cruise period1976-09-26 — 1976-11-05
Port of departureLeith, United Kingdom
Port of returnLeith, United Kingdom
ObjectivesTo carry out a gravity and magnetic survey of the British sector of the North Sea between 51° N and 62° N. Forty survey lines within the same area were surveyed as five cruise legs with intermediate port calls for changes of personnel.
Chief scientistA Dobinson (Institute of Geological Sciences, Edinburgh), Geoff A Day (Institute of Geological Sciences, Edinburgh), Michael C Tully (Institute of Geological Sciences, Edinburgh)
Cruise reportSperus 4/76 cruise report sperus4_76.pdf — access key 'C' (5.02 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificNorth Sea
Geology and geophysics 
Single-beam echosoundingQuantity: track kilometres = 3704
Single channel seismic reflectionQuantity: track kilometres = 6728.316
Description: seismic reflection pinger.Format 0 is seismic analogue paper record
Gravity measurementsQuantity: track kilometres = 6859.808
Magnetic measurementsQuantity: track kilometres = 6007.888