Cruise inventory

RV Corystes COR6/02

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corystes (74RY)
Cruise identifierCOR6/02
Cruise period2002-05-28 — 2002-06-12
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
Objectives1. To use acoustic and fishing survey methods to estimate the abundance and
distribution of sandeels on sandeel fishing grounds on the western Dogger
Bank.
2. To use fishing survey methods to estimate the abundance and distribution of
predatory fish feeding on sandeels on the sandeel fishing grounds on the
western Dogger Bank.
3. To use QTC View to describe seabed sediment type in relation to sandeel
distribution and abundance.
4. To carry out a shipboard experiment to determine gut evacuation rates of
sandeels.
5. To recover, service and re-deploy the CEFAS data transmitting sonar buoy on
the Indefatigable Bank.
6. To catch and tag cod with coded acoustic pingers and release them in the
vicinity of the CEFAS data transmitting sonar buoy on the Indefatigable Bank
in order to monitor their subsequent residence within the area.
Chief scientistJulian David Metcalfe (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise reportRV Corystes COR6/02 cruise report co06_02.pdf — access key 'C' (0.71 MB) 
Ocean/sea areas 
GeneralNorth Sea
Measurements 
Physical oceanography 
CTD stationsDescription: regularly along survey grid
Surface drifters/drifting buoysQuantity: number of recoveries = 1
Description: sonar buoy
Surface drifters/drifting buoysQuantity: number of deployments = 1
Description: replacement data transmitting sonar buoy
Biology and fisheries 
PhytoplanktonDescription: plankton samples
ZooplanktonDescription: plankton samples
Pelagic fishQuantity: number of hauls = 52
Description: Granton trawls for sandeel predators
Pelagic fishQuantity: number of species = 26
Description: caught in trawls, including 71% dabs and 10.2% whiting
Demersal fishQuantity: number of species = 26
Description: caught in trawls, including 71% dabs and 10.2% whiting
Demersal fishQuantity: number of specimens = 3921
Description: sandeels taken from 324 dredge tows
Demersal fishQuantity: number of hauls = 52
Description: Granton trawls for sandeel predators
TaggingsQuantity: number of specimens = 9
Description: cod
Other biological/fisheries measurementQuantity: number of samples = 20
Description: stomach contents of each major predator species in every haul examined
Other biological/fisheries measurementDescription: sandeel samples frozen and returned to laboratory
Geology and geophysics 
Multi-beam echosoundingQuantity: number of surveys = 11
Description: estimate sandeel abundance
Other geological/geophysical measurementsDescription: QTC View and EK500 surveyed seabed sediment