FRV Scotia 1603S_1

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Scotia (748S)
Cruise identifier1603S_1
Cruise period2003-10-25 — 2003-10-31
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
ObjectivesThis cruise is in 2 legs. Leg 1: 25-31 Oct; Leg 2: 01-08 Nov.
1. To obtain quantitative information on fish populations in the mouth of the trawl, between the wings and as close to the doors as possible. The upgraded SM200 sonar mounted on the RCTV and new fibre-optic cable will be used.
2. Simultaneous video footage, using the self-recording ccd cameras, will be collected to give information on species identification. On some hauls, a stereo-pair configuration will also be used.
3. To use the sonar to make an assessment of possible areas where fish escapes are high in the GOV trawl.
4. To test rigging and set up changes on the performance of the single GOV.
Chief scientistEmma Jones (Fisheries Research Services Aberdeen Marine Laboratory)
Cruise reportFRV Scotia 1603S_1 cruise report 1603s.pdf (0.09 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificMoray Firth and east of Orkney
Physical oceanography 
Optics (eg underwater light levels)Quantity: number of profiles = 26
Description: Light intensity profiles in between net hauls
Biology and fisheries 
Acoustic reflection on marine organisms.Quantity: number of observations = 26
Description: SeaBat and SM2000 multibeam systems to monitor fish behaviour around the net.
Other biological/fisheries measurementQuantity: number of hauls = 26
Description: GOV trawls monitored using RCTV and multibeam acoustics to determine the distribution and behaviour of fish populations between the wings and entering the net mouth in order to assess the efficiency of the GOV survey net.