RV Cefas Endeavour 11/09
Cruise summary report
|Ship name (ship code)||RV Cefas Endeavour (74E9)|
|Cruise period||2009-07-17 — 2009-07-31|
|Port of departure||Portland Harbour, United Kingdom|
|Port of return||Lowestoft, United Kingdom|
1. To undertake a beam trawl survey in the southern North Sea and eastern Channel as part of an ICES co-ordinated research programme.
2. To obtain fisheries independent data on the distribution and abundance of commercial flatfish species.
3. To collect biological data, including maturity and weight at age, of commercial species, to satisfy the requirements of the EU data regulations.
4. To identify the epibenthos by-catch taken in the 4-metre beam trawl and to quantify 12 species as agreed at the Beam Trawl Working Group.
5. To record length/weight data for all fish species sampled, time permitting.
The SIC, CRP and Nigel Lyman joined the Endeavour on the afternoon of 15 July to allow them to set up all scientific equipment on 16 July. The rest of the scientific team joined in the afternoon (1700) of 16 July.
The vessel sailed from Portland docks at 0800 17 July, and headed to the first survey station. The survey commenced to the west of the Isle of Wight in proximity of Poole and Christchurch bay at prime station 42, (VIId inshore English side) at 1247. On the first station 2 Niskin bottom salinity bottles were taken along with two surface salinity bottles before the beam trawl was shot at 1317. After successfully completing this tow the Endeavour proceeded to the next survey station. During 17 July five prime beam trawl stations were completed. All were valid, although 2 were hauled early after 20 minutes to avoid static gear. Prime 47 was a full benthic sort. 2 Niskin bottom salinity bottles and two surface salinity bottles were taken at the last station of the day (Prime 47) after the haul was complete.
The procedure described above for Niskin and surface salinity sampling was followed on each of the remaining days of the survey. CTD data was also recorded throughout the course of each day and downloaded at the end of the last haul each evening.
The Endeavour docked in Lowestoft on the morning tide of 31/07/09 at the end of the survey.
|Chief scientist||Richard Andrew Ayers (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)|
|Cruise report||(1.09 MB)|
|Specific||English Channel (VIId), North Sea (IVc).|
|Track charts||(00 MB)|