FRV Scotia 0601S
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Scotia (748S) |
| Cruise identifier | 0601S |
| Cruise period | 2001-04-02 — 2001-04-06 |
| Status | Completed |
| Port of departure | Aberdeen, United Kingdom |
| Port of return | Aberdeen, United Kingdom |
| Purpose | Trials |
| Objectives | 1) To establish working protocols for range changing on the Simrad EK500 with the new Simrad Synchronisation Unit.
2) To undertake a variety of trials and tests of the Simrad SF950 multibeam sonar. 3) To establish working methods for the use of the Simrad ITI system on the pelagic trawl including communication to the Simrad SR240 and EK500 sonar systems. 4) To calibrate all three EK500 transucers (38, 120 and 200 kHz) and the 18 kHz EA500 transducer with and without the new 'calibrate programme' for comparative purposes. 5) To collect multifrequency data (at four frequencies) and multibeam sonar data on fish schools to investigate the possibility of automatic species identification. 6) To establish which of the Scanmar transducers (hull mounted or drop keel) is the more sensitive. 7) To test the CTD winch in waters deeper than 250 m. 8) To test the new steel netsonde wire. 9) To establish the tail-fin angle of the OCEAN sampler required to attain level towing at different speeds. 10) To monitor water-flow-rates inside the net cones of the ARIES and OCEAN samplers. 11) To determine the efficiency of flow measurements inside the RCTV. 12) To undertake further sea trials using the Bran and Luebbe AA3 nutrient analyser with representatives from the instrument manufacturer. |
| Chief scientist | Paul G Fernandes (Fisheries Research Services Aberdeen Marine Laboratory) |
| Cruise report |  (0.20 MB) |
| Ocean/sea areas | |
| General | North Sea North East Atlantic Ocean (limit 40W) |
| Specific | North coast of Scotland, Moray Firth |
| Measurements | |
| Biology and fisheries | |
| Pelagic fish | Quantity: number of hauls = 5 Description: Pelagic fish trawl hauls for fish samples and species identification. |
| Acoustic reflection on marine organisms. | Quantity: track kilometres = 370.4 Description: Vertical echosounder data @ 18,38,120 & 200 kHz. Rate = 1 per second, Units = Sv(dB). for echo integration to calculate fish biomass and for species identification. |
| Geology and geophysics | |
| Single-beam echosounding | Quantity: track kilometres = 370.4 Description: Vertical echosounder data @ 18,38,120 & 200 kHz. Rate = 1 per second, Units = Sv(dB). for echo integration to calculate fish biomass and for species identification. |
