FRV Clupea 1003C_2

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier1003C_2
Cruise period2003-06-18 — 2003-06-23
Port of departureMontrose, United Kingdom
Port of returnFraserburgh, United Kingdom
Objectives1. To investigate variation in sandeel population age structure at different locations on the Wee Bankie and Marr Bank from samples collected using the Sandeel dredge.
2. To carry out a demersal trawl survey to determine the abundance and distribution of whiting, haddock and cod, the main fish predators of sandeels. At each trawl station the length frequency of all fish species caught will be determined. Sub-samples of the three gadoids will be weighed to determine length-weight relationships. Otoliths will be taken to determine age composition. Stomach samples will be collected to establish diet and food consumption rates, and livers and gonads will be removed to determine Hepato- and Gonado- Somatic Indices. (Any sandeels and clupeid fish caught during the demersal trawling will be worked up to determine length frequency distributions, length-weight relationships and age composition). Muscle tissue samples will also be collected for fatty acid and nitrogen isotope ratio analysis.
Chief scientistMichael R Robertson (Fisheries Research Services Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 1003C_2 cruise report 1003c.pdf (0.25 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificWee Bankie/Marr Bank Firth of Forth
Track chartsFRV Clupea 1003C_2 cruise track — 1003ctrack.pdf (0.12 MB) 
Biology and fisheries 
Demersal fishQuantity: number of hauls = 19
Description: Demersal fish were sampled in the Firth of Forth