RRS Challenger CH3/85
Cruise summary report
|Ship name (ship code)||RRS Challenger (74CH)|
|Cruise period||1985-04-12 — 1985-04-29|
|Port of departure||Dunstaffnage, United Kingdom|
|Port of return||Dunstaffnage, United Kingdom|
|Objectives||1. 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 scientist||John D M Gordon (Scottish Marine Biological Association)|
|Cruise report||(0.38 MB)|
|General||North East Atlantic Ocean (limit 40W)|
|Specific||Atlantic Ocean/ West of Scotland & Ireland|
|Biology and fisheries|
|Zoobenthos||Quantity: number of samples = 46|
Description: epibenthic sledge samples.
|Demersal fish||Quantity: number of hauls = 46|
Description: survey for taxonomy, energy transfers, biomass determination and distribution data.
|Gear research||Quantity: 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