Cruise inventory

RV Corystes COR4Y/03

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corystes (74RY)
Cruise identifierCOR4Y/03
Cruise period2003-04-11 — 2003-04-25
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
Objectives1. To deploy the CEFAS acoustic telemetry buoy (ATB) on the cod feeding area at the western end of the Indefatigable Bank to monitor the presence/return of cod tagged with coded acoustic pingers in 2002.
2. To use acoustic and fishing survey methods to estimate the abundance and distribution of sandeels on 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 use fishing survey methods (Bongo net) to estimate the abundance and distribution of plankton on the sandeel fishing grounds on the western Dogger Bank.
5. To use QTC and Hammond grab (HamCam) to describe sediment type in relation to sandeel distribution and abundance on the sandeel fishing grounds on the western Dogger Bank.
6. To carry out a shipboard experiment to determine gut evacuation rates of sandeels.
Chief scientistJulian David Metcalfe (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise programmeRV Corystes COR4Y/03 cruise programme cory4y_03.pdf — access key 'C' (0.19 MB) 
Cruise reportRV Corystes COR4Y/03 cruise report co4y_03.pdf — access key 'C' (0.30 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificIndefatigable Bank, western Dogger Bank
Measurements 
Physical oceanography 
Current metersDescription: Hydrographic equipment was deplyed during the cruise. No. of deployments not noted.
Instrumented wave measurementsDescription: Hydrographic equipment was deplyed during the cruise. No. of deployments not noted.
Biology and fisheries 
Sediment trapsDescription: Sediment samples from the sea bed are taken are collected for 10 days. No. of samples not noted.
ZooplanktonDescription: At Dogger Bank a survey for sandeels, sandeel predators and plankton took place. No. of samples not noted.
Pelagic fishQuantity: activity duration in days = 2
Description: 2 days were spent fishing for sandeels using a semi-pelagic trawl along the north west riff.
Pelagic fishQuantity: number of specimens = 4
Description: Cod were fished using a hand-line, 4 of those caught were big enough to be tagged.
Pelagic fishDescription: At Dogger Bank a survey for sandeels, sandeel predators and plankton took place. No. of samples not noted.
TaggingsQuantity: number of specimens = 4
Description: Cod were fished using a hand-line, 4 of those caught were big enough to be tagged.
Other biological/fisheries measurementQuantity: number of deployments = 1
Description: At the end of the Indefatigable Bank the acoustic telemetry bouy was deployed.
Geology and geophysics 
Single-beam echosoundingDescription: Hydrographic equipment was deplyed during the cruise. No. of deployments not noted.