RV Cefas Endeavour 6/03

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cefas Endeavour (74E9)
Cruise identifier6/03
Cruise period2003-08-06 — 2003-09-05
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
ObjectivesThis cruise was in 2 parts. Part A: 06-21 Aug; Part B: 22 Aug to 05 Sep 2003.
1. To carry out a groundfish survey of the North Sea as part of the ICES coordinated IBTS, using a standard GOV trawl in order to obtain information on: (a) distribution, size composition and abundance of all fish species caught; (b) age - length distribution of selected species; (c) distribution of fish in relation to their environment; (d) distribution of macrobenthos and anthropogenic debris; (e) surface and bottom temperature and salinity data using CTD; (f) length, weight and maturity information using individual fish measurements, in support of the EU Data Regulation.
2. To collect acoustic data at two operating frequencies (38 kHz and 120 kHz) continuously throughout the cruise. Data recorded from the 38 kHz transducer will be combined with GOV trawl data and an estimate of total abundance made for groundfish species. This work will form part of a three year project (CATEFA) aimed at examining the relationships between trawl catches and acoustic data.
3. To collect material for fish identification courses (C. Fox, CEFAS).
4. To preserve material from diseased fish (S. Feist, CEFAS).
5. To collect fish white muscle and queen scallop tissue for stable isotope analysis, as part of an ongoing study on the effects of fishing in the North Sea (S. Jennings, CEFAS).
6. To obtain ageing material and biological information from horse mackerel (Trachurus trachurus) from the southern North Sea (G. Eltink, RIVO, for the horse mackerel assessment working group).
7. To collect 2 metre beam trawl and Van Veen grab samples from selected GOV trawl station positions as part of the EU funded project "Managing fisheries to conserve groundfish and benthic invertebrate species diversity". The data collected, along with other data sets, will be used to develop and test an environmental model to incorporate into the EU CFP fisheries regulation calculations (R. Callaway, A. Woolmer, University of Wales, Swansea).
Chief scientistTrevor W Boon (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise programmeRV Cefas Endeavour 6/03 cruise programme endeavour6_03.pdf  (0.08 MB) 
Cruise reportRV Cefas Endeavour 6/03 cruise report endeavour6_03.pdf (0.17 MB) 
Ocean/sea areas 
GeneralNorth Sea
Track chartsRV Cefas Endeavour 6/03 cruise track — endeavour6_03trk.pdf (0.08 MB) 
Physical oceanography 
CTD stationsQuantity: number of stations = 75
Description: Micro CTD profiles
Biology and fisheries 
Pelagic fishQuantity: number of stations = 72
Description: GOV catches of all fish species
Demersal fishQuantity: number of stations = 72
Description: GOV catches of all fish species