Cruise inventory

RRS Challenger CH6A/77

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH6A/77
Cruise period1977-04-04 — 1977-04-12
Port of departureBarry, United Kingdom
Port of returnDunstaffnage, United Kingdom
Objectives1. To obtain epibenthic sledge samples of the abyssal macrobenthos from the SMBA permanent station in the Southern Rockall Trough in order to continue a time series initiated in November 1975.
2. To carry out plankton sampling and exploratory bottom sampling in the Porcupine Bank area for D.I. Williamson of Port Erin.
3. To undertake analysis of halocarbons and nitrogen oxides from air and seawater samples from the water to the west of the British Isle.
4. To undertake trials of a newly constructed box core sampler for quantitative sampling of deepwater benthos.
5. To obtain samples of the abyssal megafauna using an Agassiz trawl.
Chief scientistJohn D Gage (Scottish Marine Biological Association)
Cruise reportRRS Challenger CH6A/77 cruise report ch6a_77.pdf — access key 'C' (0.27 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
North East Atlantic Ocean (limit 40W)
Track chartsRRS Challenger CH6A/77 cruise track — trk1818.html
Other contaminant measurementsQuantity: number of stations = 6
Description: halocarbons and nitrous oxides
Biology and fisheries 
ZoobenthosQuantity: number of hauls = 10
Description: survey:taxonomy,population studies