RV Corystes COR4Y/03
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Corystes (74RY) |
| Cruise identifier | COR4Y/03 |
| Cruise period | 2003-04-11 — 2003-04-25 |
| Status | Completed |
| Port of departure | Lowestoft, United Kingdom |
| Port of return | Lowestoft, United Kingdom |
| Purpose | Research |
| Objectives | 1. 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 scientist | Julian David Metcalfe (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory) |
| Cruise programme |  (0.19 MB) |
| Cruise report | (0.30 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Specific | Indefatigable Bank, western Dogger Bank |
| Measurements | |
| Physical oceanography | |
| Current meters | Description: Hydrographic equipment was deplyed during the cruise. No. of deployments not noted. |
| Instrumented wave measurements | Description: Hydrographic equipment was deplyed during the cruise. No. of deployments not noted. |
| Biology and fisheries | |
| Sediment traps | Description: Sediment samples from the sea bed are taken are collected for 10 days. No. of samples not noted. |
| Zooplankton | Description: At Dogger Bank a survey for sandeels, sandeel predators and plankton took place. No. of samples not noted. |
| Pelagic fish | Quantity: activity duration in days = 2 Description: 2 days were spent fishing for sandeels using a semi-pelagic trawl along the north west riff. |
| Pelagic fish | Quantity: number of specimens = 4 Description: Cod were fished using a hand-line, 4 of those caught were big enough to be tagged. |
| Pelagic fish | Description: At Dogger Bank a survey for sandeels, sandeel predators and plankton took place. No. of samples not noted. |
| Taggings | Quantity: 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 measurement | Quantity: number of deployments = 1 Description: At the end of the Indefatigable Bank the acoustic telemetry bouy was deployed. |
| Geology and geophysics | |
| Single-beam echosounding | Description: Hydrographic equipment was deplyed during the cruise. No. of deployments not noted. |
