Cruise inventory

FRV Scotia 1108S_1

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Scotia (748S)
Cruise identifier1108S_1
Cruise period2008-09-02 — 2008-09-11
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnKillybegs, Ireland
PurposeFisheries
ObjectivesFRS Objectives:

1. Routine daylight survey of the Rockall Plateau to assess the haddock stock within the 200 m contour.

2. Habitat and Nephrops TV observation work along the East edge of the bank to depths of 900 m using the drop frame.

3. Identify, quantify, and record all benthic invertebrate species caught.

4. Obtain temperature and salinity data from the surface and seabed at each trawling station.

5. Collect additional biological data in connection with the EU Data Directive 1639/2001.

Plymouth University objectives:

1. Opportunistic use of the TV drop frame to contribute to mapping distribution of Annex I reef habitat as required under the EC Habitats Directive.

Narrative

Scotia sailed from Aberdeen at 0500 on Tuesday 2 September. Passage was made to the Buchan deeps where the 4-hour training period was used to familiarize the crew with the deployment of the fishing gear and operation of deck equipment including OOW bridge familiarization and DP training. Scotia made passage to the Rockall plateau arriving at the North West corner of the survey area at 2300 on 3 September. One drop frame camera deployment was carried out overnight before Scotia commenced fishing with the BT 137 (GOV) trawl at 0700. On completion of the first day's fishing activities, Scotia made passage to the 1000m contour east of the plateau to spool off the drop frame cable and re-tension it onto the TV winch. A single frame deployment was carried out on her return to the plateau and the cable spooled very well for the rest of the cruise. Fishing activities resumed throughout daylight hours for the remainder of the cruise with camera deployments as weather allowed overnight. 37 trawl stations were completed despite poor weather during part of the cruise and repeated damage to gear wing ends in the North Western areas of the plateau, which reduced the possible number of trawls per day. CTD deployments were carried out at each trawl location with surface and near seabed salinity samples being collected. Thirteen camera frame deployments were carried out over 4 nights to investigate possible areas of coral and Nephrops habitation. Video footage and digital still images were recorded of various fish and benthic species. The deepest camera frame deployment was to 953m. The trawl survey of the Rockall plateau was completed by 1600 on 9 September.

Good weather allowed the BT 137 doors to be changed over for the BT184 (Deep water trawl) doors at sea and the BT184 trawl was rigged on passage overnight to the shelf edge. Two deep water tows were completed, at 1500m and 1700m, before Scotia broke off work to make passage to Stornoway for a half landing at 1500 hrs. The half landing, to allow for a scientific crew change and to satisfy the requirements of the WTD, was made early in anticipation of a severe storm forecast for the area. Scotia docked in Stornoway at 0730 on 11 September where A Weetman, C Shand, and C Marshall (Plymouth University) left the vessel.
Chief scientistPhilip J Copland (Fisheries Research Services Aberdeen Marine Laboratory)
ProjectRockall haddock survey
Cruise reportFRV Scotia 1108S_1 cruise report 1108s.pdf — access key 'C' (0.24 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificRockall Plateau
Track chartsFRV Scotia 1108S_1 cruise track — 1108strk.pdf (00 MB) 
Data held at BODC 
Series/Profiles 
37  CTD/STD cast
Electrical conductivity of the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Concentration of suspended particulate material in the water column
Temperature of the water column
Reference numbers
Electrical conductivity of the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Concentration of suspended particulate material in the water column
Temperature of the water column
Reference numbers

BODC idDate/TimeLocationDoc.
9209992008-09-04 07:29 57° 52' 47" N  13° 39' 55" W  View metadata report for BODC series reference number 920999
9210022008-09-04 09:23 57° 44' 12" N  13° 36' 18" W  View metadata report for BODC series reference number 921002
9210142008-09-04 11:44 57° 48' 13" N  13° 45' 31" W  View metadata report for BODC series reference number 921014
9210262008-09-04 14:15 57° 45' 30" N  13° 45' 38" W  View metadata report for BODC series reference number 921026
9210382008-09-04 16:30 57° 41' 4" N  13° 57' 27" W  View metadata report for BODC series reference number 921038
9210512008-09-05 05:33 57° 39' 1" N  14° 8' 42" W  View metadata report for BODC series reference number 921051
9210632008-09-05 07:46 57° 35' 6" N  14° 1' 21" W  View metadata report for BODC series reference number 921063
9210752008-09-05 10:01 57° 27' 24" N  14° 14' 42" W  View metadata report for BODC series reference number 921075
9210872008-09-05 12:07 57° 21' 42" N  14° 11' 53" W  View metadata report for BODC series reference number 921087
9210992008-09-05 13:43 57° 22' 32" N  14° 5' 24" W  View metadata report for BODC series reference number 921099
9211062008-09-05 15:36 57° 15' 6" N  14° 6' 49" W  View metadata report for BODC series reference number 921106
9211182008-09-05 18:40 57° 8' 29" N  14° 8' 15" W  View metadata report for BODC series reference number 921118
9211312008-09-06 05:34 56° 56' 45" N  14° 29' 24" W  View metadata report for BODC series reference number 921131
9211432008-09-06 07:36 56° 52' 34" N  14° 32' 2" W  View metadata report for BODC series reference number 921143
9211552008-09-06 09:54 56° 46' 34" N  14° 43' 18" W  View metadata report for BODC series reference number 921155
9211672008-09-06 12:04 56° 35' 55" N  14° 43' 7" W  View metadata report for BODC series reference number 921167
9211792008-09-06 14:11 56° 28' 30" N  14° 44' 37" W  View metadata report for BODC series reference number 921179
9211802008-09-06 17:09 56° 33' 32" N  14° 31' 3" W  View metadata report for BODC series reference number 921180
9211922008-09-06 18:58 56° 36' 27" N  14° 28' 30" W  View metadata report for BODC series reference number 921192
9212112008-09-07 05:35 56° 43' 18" N  14° 12' 22" W  View metadata report for BODC series reference number 921211
9212232008-09-07 07:48 56° 44' 39" N  14° 18' 3" W  View metadata report for BODC series reference number 921223
9212352008-09-07 09:30 56° 50' 8" N  14° 11' 33" W  View metadata report for BODC series reference number 921235
9212472008-09-07 11:33 56° 58' 5" N  14° 13' 29" W  View metadata report for BODC series reference number 921247
9212592008-09-07 13:28 57° 1' 45" N  14° 14' 12" W  View metadata report for BODC series reference number 921259
9212602008-09-07 16:49 57° 2' 46" N  13° 48' 2" W  View metadata report for BODC series reference number 921260
9212722008-09-07 18:51 56° 58' 30" N  13° 41' 37" W  View metadata report for BODC series reference number 921272
9212842008-09-08 05:45 57° 18' 37" N  13° 32' 8" W  View metadata report for BODC series reference number 921284
9212962008-09-08 07:27 57° 17' 20" N  13° 38' 55" W  View metadata report for BODC series reference number 921296
9213032008-09-08 09:28 57° 17' 13" N  13° 51' 52" W  View metadata report for BODC series reference number 921303
9213152008-09-08 11:43 57° 19' 33" N  13° 57' 24" W  View metadata report for BODC series reference number 921315
9213272008-09-08 14:02 57° 19' 50" N  13° 46' 14" W  View metadata report for BODC series reference number 921327
9213392008-09-08 17:00 57° 23' 26" N  13° 30' 40" W  View metadata report for BODC series reference number 921339
9213402008-09-09 05:32 57° 29' 18" N  13° 40' 10" W  View metadata report for BODC series reference number 921340
9213522008-09-09 07:28 57° 24' 15" N  13° 38' 41" W  View metadata report for BODC series reference number 921352
9213642008-09-09 09:52 57° 33' 45" N  13° 25' 7" W  View metadata report for BODC series reference number 921364
9213762008-09-09 13:13 57° 45' 18" N  13° 24' 47" W  View metadata report for BODC series reference number 921376
9289652008-09-04 05:45 57° 54' 15" N  13° 45' 16" W  View metadata report for BODC series reference number 928965