Cruise inventory

RV Corystes COR4/93

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corystes (74RY)
Cruise identifierCOR4/93
Cruise period1993-04-02 — 1993-04-19
Port of departureLowestoft, United Kingdom
Port of returnSouth Shields, United Kingdom
Objectives1. To establish a short-term/long-term experimental site to measure the effect of fishing with a commercial 4m beam trawl fitted with chain mat on the sea bed and on commercial and non-commercial benthic species.
2. To beam trawl an area of the site using an experimental design to measure two levels of fishing intensity (x10 and x20) and frequency (fished only once and then x2 per year) relative to unfished controlled areas.
3. To measure food preference and movement of predators (using pots baited with different components of the by-catch and the benthos dredge) into an area fished with a beam trawl.
4. To observe feeding activity (from stomach contents) of dogfish (Scyliorhinus canicula) and gurnards (Triglidae) sampled before and after an interval of beam trawling.
5. To film predators attracted by a baited camera frame on the sea bed using various components of the by-catch.
6. To estimate the survival of animals caught in the cod-end using the on-board survival system over a prolonged period
Chief scientistB E Spencer (Ministry of Agriculture, Fisheries and Food Conwy Laboratory)
Cruise reportRV Corystes COR4/93 cruise report co4_93.pdf — access key 'C' (0.41 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificIrish Sea, East of Anglesey, Liverpool Bay
Track chartsRV Corystes COR4/93 cruise track — trk3849.html
Biology and fisheries 
Demersal fishQuantity: number of hauls = 66
Geology and geophysics 
DredgeQuantity: number of deployments = 29
GrabQuantity: number of samples = 83
Long/short range side scan sonar
Other geological/geophysical measurementsDescription: sea bed composition using Roxanne