Cruise inventory

RRS Discovery D74B

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD74B
Cruise period1975-09-15 — 1975-09-26
Port of departureBantry, Ireland
Port of returnBrest, France
ObjectivesThe principal objective of this cruise was to occupy a number of closely spaced seismic profiles across the outer shelf, slope and rise between the Porcupine Seabight and Brittany. These profiles were to complement profiles previously taken during Discovery Cruises 47 and 60 and 24 channel seismic profiles to be occupied by the Institut Francias du Petrole in August.
Chief scientistDavid G Roberts (Institute of Oceanographic Sciences Wormley Laboratory)
ProjectSeismic Reflection Profiling Across The Continental Margin in the SW Approaches
Cruise reportRRS Discovery D74B cruise report d74_leg2.pdf — access key 'C' (8.53 MB)  RRS Discovery D74B cruise report d74_shackleton6_76_data_report.pdf (3.26 MB) 
Ocean/sea areas 
GeneralBay of Biscay
North East Atlantic Ocean (limit 40W)
Track chartsRRS Discovery D74B cruise track — trk1626.html
Physical oceanography 
Surface measurements underway (T,S)Description: T only
Currents measured from ship drift
Routine standard measurements
Geology and geophysics 
Single-beam echosounding
Long/short range side scan sonar
Single channel seismic reflection
Magnetic measurements
Magnetic measurements