Marigold 0706H
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | Marigold (74M4) |
| Cruise identifier | 0706H |
| Cruise period | 2006-11-02 — 2006-11-12 |
| Status | Completed |
| Port of departure | Peterhead, United Kingdom |
| Port of return | Peterhead, United Kingdom |
| Purpose | Fisheries |
| Objectives | Objectives
1. To undertake a nationally co-ordinated demersal trawling survey of anglerfish in the North Sea (Eastern survey area). 2. To obtain temperature data at each trawling station. 3. To obtain net parameter and bottom contact data for each trawling station. Procedures This is a new trawl survey which follows a set of protocols drawn up by an industry science survey planning group made up of FRS scientists and fishing representatives. These protocols share much in common with the sampling regimes described in FRS' standing instructions for demersal trawl surveys. The cruise track and sampling locations will be delivered to the skipper prior to departure. Trawling in Norwegian waters will take place for approximately 7 stations. Trawling One haul of 60 minutes duration will be made at each sampling station; trawling operations will occur in waters up to a maximum of 500 m. Daily start times will be at approximately 0500 and continue until approximately 2100. The Scanmar system will be used to monitor wing spread, door spread and distance covered during each haul. A bottom contact sensor will be mounted on the footrope. Catches will be worked up according to the protocols for the FRS anglerfish surveys, which are similar in principle to FRS standing instructions. Hydrography A minilog temperature/depth recording unit will be deployed on the trawl at each station. |
| Chief scientist | Iain M Penny (Fisheries Research Services Aberdeen Marine Laboratory) |
| Coordinating body | FRS |
| Cruise report |  (0.18 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Specific | North Sea, Norwegian waters |
| Track charts | (0.03 MB) |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: number of stations = 32 Description: minilog temperature/depth unit deployed |
| Subsurface temperature and salinity measurements | Quantity: number of stations = 32 Description: minilog temperature/depth unit deployed |
| Other physical oceanographic measurements | Quantity: number of deployments = 32 Description: Temperature logger attached to net |
| Biology and fisheries | |
| Demersal fish | Quantity: number of specimens = 335 Description: 281 individual Monkfish for a total live weight of 590 kgs from within the Eastern survey area. 54 individual Monkfish for a live weight of 76 kgs were sampled from the Northern Survey area |
| Demersal fish | Quantity: number of specimens = 300 Description: 269 Megrim for a live weight of 95 kgs from within the Eastern survey area. 31 Megrim for a live weight of 11 kgs were sampled from the Northern Survey area |
| Demersal fish | Quantity: number of hauls = 32 Description: demersal trawls for Monkfish |
