RV Corystes COR10/98

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corystes (74RY)
Cruise identifierCOR10/98
Cruise period1998-10-10 — 1998-10-20
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1.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 scientistClive G Brown (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise reportRV Corystes COR10/98 cruise report co10_98.pdf (0.07 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificNE coast of England
Biology and fisheries 
Pelagic fishQuantity: number of stations = 30
Description: Measurements of cod and nephrops
Demersal fishQuantity: number of stations = 30
Description: Measurements of cod and nephrops
CrustaceansDescription: At salected stations: samples of nephrops
Geology and geophysics 
GrabQuantity: number of stations = 102
Description: Sediment samples
Bottom photographyQuantity: number of stations = 102
Description: TV survey, 10 mins duration at each station