RRS Challenger CH3/85

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH3/85
Cruise period1985-04-12 — 1985-04-29
Port of departureDunstaffnage, United Kingdom
Port of returnDunstaffnage, United Kingdom
Objectives1. To sample the fish populations of the Rockall Trough using a semi-balloon otter trawl and to compare the results of fishing with paired or single warps.
2. To experiment with lights attached to bottom trawls.
3. To obtain Agassiz trawls and epibenthic sledge samples from the SMBA permanent benthic stations and other stations on the Hebridean Terrace.
4. To collect material for Institutes and Museums.
Chief scientistJohn D M Gordon (Scottish Marine Biological Association)
Cruise reportRRS Challenger CH3/85 cruise report ch3_85.pdf (0.38 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificAtlantic Ocean/ West of Scotland & Ireland
Track chartsRRS Challenger CH3/85 cruise track — trk3161.html
Biology and fisheries 
ZoobenthosQuantity: number of samples = 46
Description: epibenthic sledge samples.
Demersal fishQuantity: number of hauls = 46
Description: survey for taxonomy, energy transfers, biomass determination and distribution data.
Gear researchQuantity: number of hauls = 35
Description: comparative hauls carried out with two lights attached to the headline of a bottom trawl comparing results with the lights on and the lights off