Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

RV Corystes COR11B/93

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corystes (74RY)
Cruise identifierCOR11B/93
Cruise period1993-10-18 — 1993-10-29
Port of departureLiverpool, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To survey the seabed and sample benthos at the experimental site off Anglesey (Ref. 53 25.539N; 04 01.548W) fished intensively with a 4m beam trawl fitted with chain mat in April 1993.
2. To beam trawl and sample the experimental site along the four lines designated for frequent fishing disturbance (two times per year) using two intensities of fishing (x10 and x20 tows).
3. To estimate the survival rate of animals caught in the cod-end using the on-board survival system over a prolonged period.
4. To measure the effect of tow duration on the survival of animals which pass through the mesh of the beam trawl.
5. To film predators attracted to a baited camera frame on the sea bed using various components of the by-catch.
6. To quantify the number of macroepibenthic animals moving onto trawled tracks by sampling with a 3m beam trawl.
7. To measure the variance of sampling with the benthos dredge.
Aims 4, 6 and 7 were not completed due to a lack of time available.
Chief scientistB E Spencer (Ministry of Agriculture, Fisheries and Food Conwy Laboratory)
Cruise reportRV Corystes COR11B/93 cruise report co11b_93.pdf — access key 'C' (0.34 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificIrish Sea
Track chartsRV Corystes COR11B/93 cruise track — trk3994.html
Biology and fisheries 
Demersal fishQuantity: number of hauls = 60
Geology and geophysics 
DredgeQuantity: number of deployments = 34
GrabQuantity: number of samples = 136
Long/short range side scan sonarQuantity: number of hauls = 16
Other geological/geophysical measurementsQuantity: number of deployments = 6
Description: ROXANN bottom sediment typing system
Other geological/geophysical measurementsDescription: underwater camera