RV Corystes COR5A/95
Cruise summary report
|Ship name (ship code)||RV Corystes (74RY)|
|Cruise period||1995-04-21 — 1995-05-03|
|Port of departure||Lowestoft, United Kingdom|
|Port of return||Liverpool, United Kingdom|
|Objectives||1. To survey the seabed and sample benthos at the experimental site off Anglesey (ref. 53.25.5N; 04.01.5W) fished intensively with a beam trawl fitted with chain mat for the last time in October 1994.
2. To estimate the survival of animals caught in the cod-end using the on-board survival system over a prolonged period. No survival experiments were made.
3. To measure the survival of animals which pass through the mesh of the beam trawl. No survival experiments were made.
4. To film predators attracted to baited camera frames/and/or a frame mounted video camera on the sea bed using various components of the by-catch.
5. To quantify the number of macroepibenthic animals moving onto trawled tracks and control areas by sampling with a 3m beam trawl.
6. To estimate amphipod abundance with baited traps.
7. To undertake comparative trials with beam trawls and scallop dredges in Manx waters, to establish by-catch composition and damage to the benthos in co-operation with Port Erin Marine Laboratory (PEML), Isle of Man.
8. To test 3m beam trawl on Nephrops ground near to Isle of Man as part of IMPACT II programme.
|Chief scientist||B E Spencer (Ministry of Agriculture, Fisheries and Food Conwy Laboratory)|
|Cruise report||(0.15 MB)|
|General||Irish Sea and St. George's Channel|
|Specific||E Irish Sea|
|Biology and fisheries|
|Demersal fish||Quantity: number of hauls = 168|
Description: tows made with both 3m and 4m beam trawls.
|Geology and geophysics|
|Dredge||Quantity: number of deployments = 24|
|Grab||Quantity: number of samples = 96|
|Long/short range side scan sonar|