RV Cirolana CIR9/84
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Cirolana (74CZ) |
| Cruise identifier | CIR9/84 |
| Cruise period | 1984-10-17 — 1984-11-13 |
| Status | Completed |
| Port of departure | Grimsby, United Kingdom |
| Port of return | Grimsby, United Kingdom |
| Purpose | Fisheries |
| Objectives | 1. To carry out a groundfish survey of the North Sea using a short-winged GOV trawl in order to obtain information on:
(i) the distribution and abundance of all fish species caught by the trawl. (ii) species interactions by examining stomach contents of selected predators. (iii) length and age distributions of cod, haddock, whiting, saithe, Norway pout and plaice. (iv) the distribution of fish in relation to environmental conditions. All data will be entered on the ship's computer to create a data base for this cruise and summaries of the data obtained before the shop docks. 2. To sample the environment via the pumped sea water supply to shipboard sensors including: (a) shallow water CTD (b) Turner 10 fluorometer rigged to sample chlorophyll 'a'. 3. To take vertical CTD profiles of temperature, salinity and oxygen. All instruments will be data logged and programmes tested to give depth profiles and surface transects. |
| Chief scientist | C Timothy Macer (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
| Cruise report |  (0.11 MB) |
| Ocean/sea areas | |
| General | North Sea Norwegian Sea North East Atlantic Ocean (limit 40W) |
| Specific | North Sea |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Description: continuous monitoring. |
| CTD stations | Quantity: number of stations = 66 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Description: continuous monitoring of chlorophyll 'A' |
| Demersal fish | Quantity: number of stations = 66 Description: Trawling |
