Cruise inventory

RV Corystes COR6/03

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corystes (74RY)
Cruise identifierCOR6/03
Cruise period2003-06-01 — 2003-06-16
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeFisheries
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 (Bongo net) to estimate the abundance and distribution of plankton on the sandeel fishing grounds on the western Dogger Bank.
3. 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.
4. To carry out a shipboard experiment to determine gut evacuation rates of sandeels. An insufficient number of sandeels were caught to enable this aim to be carried out.
Chief scientistJulian David Metcalfe (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise programmeRV Corystes COR6/03 cruise programme cory6_03.pdf — access key 'C' (0.05 MB) 
Cruise reportRV Corystes COR6/03 cruise report cory6_03.pdf — access key 'C' (0.18 MB) 
Ocean/sea areas 
GeneralNorth Sea
Specificwestern Dogger Bank
Measurements 
Physical oceanography 
CTD stationsQuantity: number of stations = 54
Biology and fisheries 
PhytoplanktonQuantity: number of stations = 54
Description: Hauls were made taken using a 0.5m ring net (60 mpi).
ZooplanktonQuantity: number of stations = 54
Description: Hauls were made taken using a 0.5m ring net (60 mpi).
Pelagic fishQuantity: number of hauls = 7
Description: Fishing for sandeels using a semi-pelagic trawl was attempted.
Demersal fishQuantity: number of stations = 54
Description: Trawl survey to estimate the distribution and relative abundance of sandeel predators using a standard Granton trawl with a 12mm liner. Each trawl lasted twenty minutes.
Demersal fishQuantity: number of stations = 54
Description: Dredge survey for sandeels buried in the seabed carried out using a 1.2m sandeel dredge. The dredge was towed for ten minutes at each station.
Geology and geophysics 
DredgeQuantity: number of stations = 54
Description: Dredge survey for sandeels buried in the seabed carried out using a 1.2m sandeel dredge. The dredge was towed for ten minutes at each station.
Multi-beam echosoundingQuantity: number of stations = 54
Description: surveyed using the Simrad EK500 dual frequency split beam echo sounder with echo integration.