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RV Corystes COR10/98
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RV Corystes (74RY) |
Cruise identifier | COR10/98 |
Cruise period | 1998-10-10 — 1998-10-20 |
Status | Completed |
Port of departure | Lowestoft, United Kingdom |
Port of return | Lowestoft, United Kingdom |
Purpose | Research |
Objectives | 1.To conduct a TV survey of the English NE coast Nephrops grounds using a towed sledge and underwater TV camera to evaluate burow density and estimate Nephrops biomass in the area 55° 35' - 54° 45' N and 1° 30' - 0° 40' W.
2. To backup the TV survey with a trawl survey to establish the size composition and sex ratio of the Nephrops catch. 3. To collect sediment samples by Day grab to establish the type of substrate most suitable for Nephrops. 4. To collect samples of mud dwelling benthos using a Hamon grab. 5. To make observations on mud burrows, to try to establish the occupying organisms and size distribution of Nephops populatons, by using a drop camera cage with video and stills camera attached. |
Chief scientist | Clive G Brown (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory) |
Cruise report | (0.07 MB) |
Ocean/sea areas | |
General | North Sea |
Specific | NE coast of England |
Measurements | |
Biology and fisheries | |
Pelagic fish | Quantity: number of stations = 30 Description: Measurements of cod and nephrops |
Demersal fish | Quantity: number of stations = 30 Description: Measurements of cod and nephrops |
Crustaceans | Description: At salected stations: samples of nephrops |
Geology and geophysics | |
Grab | Quantity: number of stations = 102 Description: Sediment samples |
Bottom photography | Quantity: number of stations = 102 Description: TV survey, 10 mins duration at each station |