Cruise inventory

RRS Challenger CH20

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH20
Cruise period1987-10-17 — 1987-11-03
StatusCompleted
Port of departureTroon, United Kingdom
Port of returnBarry, United Kingdom
PurposeResearch
Objectives1. To sample the bottom-living fishes of the Rockall Trough at depths from 250 to 3000m with a semi-balloon trawl.
2. To continue the benthic time-series at the SMBA permanent stations in the Rockall Trough using an epibenthic sledge, Agassiz trawl and box corer.
3. To sample the megabenthos of the Hebridean Terrace using an Agassiz trawl for reproductive, nutritional and genetic studies.
4. If time permitted to sample the Feni Ridge with an Agassiz trawl.
Chief scientistJohn D M Gordon (Scottish Marine Biological Association)
Cruise reportRRS Challenger CH20 cruise report ch20_87.pdf — access key 'C' (0.33 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificRockall Trough/ Porcupine Sea Bight
Track chartsRRS Challenger CH20 cruise track — ch20_87track.pdf (00 MB) 
Measurements 
Biology and fisheries 
ZoobenthosQuantity: number of samples = 31
Description: survey:distribution,population studies
Demersal fishQuantity: number of hauls = 24
Gear researchQuantity: number of hauls = 31
Exploratory fishingQuantity: number of hauls = 31
Other biological/fisheries measurementQuantity: number of hauls = 24
Description: non commercial fish
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 3