FRV Scotia 1004S

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Scotia (748S)
Cruise identifier1004S
Cruise period2004-07-01 — 2004-07-22
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1. To conduct an acoustic survey to estimate the abundance and distribution of herring in the north western North Sea and north of Scotland between 58 15-61.45'N and 4W to 2E, excluding Faroese waters.
2. To obtain echosounder trace identification using pelagic trawl.
3. To obtain samples of herring for biological analysis, including age, length, weight, sex, maturity and ichthyophonus infection.
4. To obtain photographic records for fish maturity analysis.
5. To obtain hydrographic data for comparison with the horizontal and vertical distribution of herring.
6. To obtain plankton samples for acoustic identification work.
7. To obtain plankton data using Utow.
8. To conduct SAT (Sea Acceptance Trial) on new EK60 echo sounder system.
Chief scientistEdmund John Simmonds (Fisheries Research Services Aberdeen Marine Laboratory)
Cruise reportFRV Scotia 1004S cruise report 1004s.pdf (0.08 MB) 
Ocean/sea areas 
GeneralNorth Sea
North East Atlantic Ocean (limit 40W)
SpecificNorth western North Sea and north of Scotland, Orkney and Shetland Islands
Physical oceanography 
Surface measurements underway (T,S)Description: Continuous throughout the cruise.
CTD stationsQuantity: number of stations = 19
Biology and fisheries 
PhytoplanktonQuantity: number of stations = 39
Description: Methot net.
ZooplanktonQuantity: number of stations = 39
Description: Methot net.
Pelagic fishQuantity: number of hauls = 40
Description: PT160 midwater trawl. Hauls were carried out on observed fish traces on an opportunistic basis.
Acoustic reflection on marine organisms.Description: Simrad EK500 echosounder used throughout the acoustic survey.