Cruise inventory

RV Corystes COR11/98

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corystes (74RY)
Cruise identifierCOR11/98
Cruise period1998-10-26 — 1998-11-06
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
Objectives1. To survey areas subjected to different intensities of fishing in the North Sea using a combination of the following techniques.
2. Sidescan sonar survey to ascertain the comparability of substratum type in areas used for comparative studies and to ascertain the recent intensity of fishing in those areas.
3. Sample the epibenthic community within specific areas using repeated tows (3-5 min duration) of a 2m beam trawl to obtain quantitative estimates of epifauna.
4. Collect specimens of live bivalves at each station using an anchor dredge for determination of historical fishing intensity which can be related to the communities observed in aim 2 (NP0309).
5. Undertake video and still camera observations of the seabed.
6. Quantify the proportion of starfish with lost arms to verify differences in fishing intensity.
Chief scientistWilliam John Meadows (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise reportRV Corystes COR11/98 cruise report co11_98.pdf — access key 'C' (0.28 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificNorth Sea
Measurements 
Biology and fisheries 
Demersal fishDescription: 2m beam trawl tows of duration 10 and 20 minutes.
MolluscsDescription: 2m beam trawl tows of duration 10 and 20 minutes.
Geology and geophysics 
DredgeQuantity: number of stations = 23
Description: sampled using a combination of Day grab and anchor dredges
GrabQuantity: number of stations = 23
Description: sampled using a combination of Day grab and anchor dredges
Long/short range side scan sonarDescription: side-scan sonar tests.