RV Cirolana CIR6/83
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Cirolana (74CZ) |
| Cruise identifier | CIR6/83 |
| Cruise period | 1983-05-24 — 1983-06-20 |
| Status | Completed |
| Port of departure | Grimsby, United Kingdom |
| Port of return | Grimsby, United Kingdom |
| Purpose | Fisheries |
| Objectives | 1. To conduct a plankton survey of the area to assess the abundance of mackerel eggs and larvae.
2. To sample mackerel and other pelagic species on the spawning grounds using either bottom or midwater trawls and to sample other groundfish. 3. To use the 2m neuston net to sample mackerel larvae at the surface. 4. To take surface water samples for shipboard analysis of chlorophyll 'a' and phaeophytins. 5. To rendezvous with RV CHALLENGER (SIC S Coombs) at Great Sole Bank and carry out comparative hauls with them using the UOR (undulating oceanographic recorder). |
| Chief scientist | B C Bedford (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
| Project | Mackerel Egg Survey |
| Coordinating body | ICES |
| Cruise report |  (0.33 MB) |
| Ocean/sea areas | |
| General | Irish Sea and St. George's Channel North East Atlantic Ocean (limit 40W) |
| Specific | Continental Slope - West of Ireland, Celtic Sea, North Biscay |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Water bottle stations | Quantity: number of stations = 8 Description: See MAFF Fisheries Research Data Report No 17, 1989 |
| Biology and fisheries | |
| Phytoplankton | Quantity: number of hauls = 151 Description: hauls made with the 53cm plankton sampler. |
| Zooplankton | Quantity: number of hauls = 151 Description: hauls made with the 53cm plankton sampler. |
| Neuston | Quantity: number of stations = 33 Description: The two metre Neuston net was towed for half an hour at the surface at approximately noon and midnight each day. |
| Pelagic fish | Quantity: number of hauls = 10 Description: one hour hauls were made using the Portuguese high headline trawls. |
