RRS Challenger CH13/83

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH13/83
Cruise period1983-09-16 — 1983-10-02
Port of departureDunstaffnage, United Kingdom
Port of returnPlymouth, United Kingdom
Objectives1. To sample the fish populations of the shelf/slope transition zone on the Hebridean Terrace using a Granton Trawl.
2. To sample the fish populations of the slope of the Hebridean Terrace using the Marinovitch semi-balloon otter trawl.
3. To continue the seasonal survey of the Porcupine Sea Bight using the Granton trawl and the IOS semi-balloon otter trawl.
4. To obtain samples of the tissue from Hoplestethus atlanticus for electrophoretic studies.
5. To obtain blood samples from sharks and chimaeroids for electrophoretic studies.
6. To recover two IOS bathysnaps from the Porcupine Sea Bight.
7. To collect specimens for the Zoological Museum, Copenhagen.
Chief scientistJohn D M Gordon (Scottish Marine Biological Association)
Cruise reportRRS Challenger CH13/83 cruise report ch13_83.pdf (0.24 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificN.E. Atlantic/ Rockall Trough/ Porcupine Sea Bight
Track chartsRRS Challenger CH13/83 cruise track — trk3159.html
Biology and fisheries 
ZoobenthosQuantity: number of hauls = 20
Demersal fishQuantity: number of hauls = 20
Description: survey:taxonomy,energy transfers,biomass determination,distribution
Exploratory fishingQuantity: number of hauls = 20