Cruise inventory

RV Cefas Endeavour 13B/05

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cefas Endeavour (74E9)
Cruise identifier13B/05
Cruise period2005-08-25 — 2005-09-03
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
Objectives1. 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 & 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 roundfish 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 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 Lowestoft).
4. To carry out 6 hard ground tows of the NE coast using the modified rock-hopper GOV.
5. To collect cod blood and tissue samples as part of cod endocrine project (S. Scott, CEFAS, Weymouth). Not started due to failure of net drum.
Chief scientistBrian F M Harley (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise reportRV Cefas Endeavour 13B/05 cruise report endeavour13_05.pdf — access key 'C' (0.14 MB) 
Ocean/sea areas 
GeneralNorth Sea
Track chartsRV Cefas Endeavour 13B/05 cruise track — endeavour13_05trk.pdf (00 MB) 
Measurements 
Physical oceanography 
Subsurface temperature and salinity measurementsQuantity: number of hauls = 73
Description: A number of GOV hauls were carrired out during the cruise. Trawls were carried out for the International Bottom Trawl Surveys.
Biology and fisheries 
Pelagic fishQuantity: number of hauls = 73
Description: A number of GOV hauls were carrired out during the cruise. Trawls were carried out for the International Bottom Trawl Surveys.
Demersal fishQuantity: number of hauls = 73
Description: A number of GOV hauls were carrired out during the cruise. Trawls were carried out for the International Bottom Trawl Surveys.
Demersal fishQuantity: number of samples = 381
Description: A number of white muscle tissue samples were collected form 15 different species during the cruise.
Demersal fishQuantity: number of hauls = 6
Description: A number of hauls were made with the rockhopper ground gear. A notable number of herring and cod were caught.
CrustaceansQuantity: number of hauls = 73
Description: A number of GOV hauls were carrired out during the cruise. Trawls were carried out for the International Bottom Trawl Surveys.
Geology and geophysics 
Multi-beam echosoundingDescription: Acoustic data using and echo-beam sounder was gathered for fisheries. No. of measurements not noted.