RV Cefas Endeavour 25/15
|Ship name (ship code)||RV Cefas Endeavour (74E9)|
|Cruise period||2015-11-16 — 2015-11-18|
|Port of departure||Lowestoft, United Kingdom|
|Port of return||Lowestoft, United Kingdom|
To assess the impact of beam trawling on macro-crustacea
- Take delivery of several hundred live crab before sailing, paint the crabs with UV paint prior to deployment and leave to dry for an hour.
- Once on station, put crabs (100-200?) on seabed with bait using baskets or fish release cages. Mark the position.
- As soon as possible return to the position towing a beam trawl at 4-5 knots for 500 metres. Sort the catch once on board and assess damage to crabs and lobsters.
- Deploy ROV or drop frame with video camera and tow over the trawl site, following the trawl tracks.
- Go over video footage and assess damage to crabs and lobsters.
- This will be repeated at similar sites during daylight hours, ideally 2/3 stations per day.
- After deploying crabs and bait at the initial station the ROV may then be deployed before beam trawling to video the behaviour of the crabs to better understand where they are likely to go.
|Chief scientist||Ian David Holmes (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)|
|Specific||Race Bank, southern North Sea|