Cruise inventory

FRV Scotia 0911S

Cruise plan

Cruise Info. 
Ship name (ship code)FRV Scotia (748S)
Cruise identifier0911S
Cruise period2011-07-29 — 2011-08-19
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeFisheries
ObjectivesObjectives

1. To complete an internationally coordinated demersal trawling survey in the North Sea in ICES area IV...
2. To obtain temperature and salinity data from the surface and seabed at each trawling station.
3. Collect additional biological data in connection with the EU Data Collection Framework (DCF).
4. Opportunistic Benthic sampling in collaboration with JNCC utilising both the drop frame for observational work and the Day Grab for sediment verification.

Procedures

General

Loading of the trawl gear will take place on 26 July with rigging and testing being completed on the same day. Loading of the scientific gear will also take place on the same day. Scotia will then sail on the morning of 29 July. The first trawl station is close to Aberdeen therefore once safety drills have been completed Scotia will proceed to the first station where a shakedown haul will be completed in advance of the first real haul in order to check the net configuration and Scanmar units. An operational daily survey plan will be formulated by the SIC subsequent to meetings with both the Fishing Master and the Captain. It is the intention that these meetings take place where possible during times that are mutually convenient. Similar discussions will take place when organising the benthic work at night and will include the scientist leading the benthic operations.

Trawling

One demersal haul of 30 minutes duration will be made in each statistical rectangle shown on the attached chart. Trawling will be undertaken during the hours of daylight, which will vary depending on the vessels latitude at any given time. The Scanmar system will be used to monitor the headline height, wingspread and door spread for each haul. Bottom contact data from each trawl will also be collected using the NOAA bottom contact sensor, which will be mounted in the centre of the ground-gear. In addition to the routine sampling, biological data will be collected for target species in line with the EU data regulation. All fish will be processed in accordance with Standing Instructions.

Hydrography

CTD casts will be taken at every trawl station. These provide surface and bottom temperature and salinity information. Reverser bottles affixed to the CTD wire will also be used to collect water samples that will be analysed back at the lab. This will provide information on salinity, nitrates, silicates and phosphates at each station. In addition, the ships thermosalinograph will be run continuously throughout the cruise and will provide sea surface temperature and salinity data.

Benthic Work

This work is a collaboration between MSS and JNCC and will be undertaken within UK waters during the hours of darkness once trawling operations have ceased for the day. The work will involve deployment of the drop frame from the aft deck and recording TV and photographic stills footage of the seabed via an umbilical cable. In addition, the Day Grab will also be deployed from the hangar deck and this will provide highly resolved information on faunal structure as well as substrate type.
Chief scientistFinlay Burns (Marine Scotland Aberdeen Marine Laboratory)
ProjectRV1112
Ocean/sea areas 
GeneralNorth Sea
SpecificNorth Sea (ICES area IV)
Track chartsFRV Scotia 0911S cruise track — 0911strk.pdf (00 MB) 
Data held at BODC 
Series/Profiles 
31  CTD/STD cast
Density of the water column
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
Density of the water column
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.
11584272011-07-29 11:27 57° 9' 43" N  1° 46' 14" W  View metadata report for BODC series reference number 1158427
11584392011-07-29 14:33 57° 14' 0" N  0° 50' 12" W  View metadata report for BODC series reference number 1158439
11584402011-07-29 18:01 57° 33' 4" N  0° 12' 2" W  View metadata report for BODC series reference number 1158440
11584522011-08-09 14:18 56° 45' 45" N  2° 14' 49" W  View metadata report for BODC series reference number 1158452
11584642011-08-11 11:20 57° 7' 37" N  4° 22' 18" E  View metadata report for BODC series reference number 1158464
11584762011-08-11 15:44 57° 18' 15" N  5° 6' 25" E  View metadata report for BODC series reference number 1158476
11584882011-08-12 03:58 56° 8' 42" N  7° 21' 3" E  View metadata report for BODC series reference number 1158488
11585072011-08-12 07:13 56° 12' 0" N  6° 33' 23" E  View metadata report for BODC series reference number 1158507
11585192011-08-12 10:02 56° 7' 55" N  5° 53' 26" E  View metadata report for BODC series reference number 1158519
11585202011-08-12 14:32 56° 12' 42" N  4° 36' 42" E  View metadata report for BODC series reference number 1158520
11585322011-08-12 18:12 56° 16' 29" N  3° 39' 18" E  View metadata report for BODC series reference number 1158532
11585442011-08-13 04:02 56° 25' 23" N  1° 39' 10" E  View metadata report for BODC series reference number 1158544
11585562011-08-13 11:14 55° 41' 52" N  2° 15' 28" E  View metadata report for BODC series reference number 1158556
11585682011-08-13 13:56 55° 35' 16" N  1° 43' 9" E  View metadata report for BODC series reference number 1158568
11585812011-08-13 16:21 55° 18' 54" N  1° 39' 56" E  View metadata report for BODC series reference number 1158581
11585932011-08-14 05:00 54° 50' 30" N  1° 41' 18" E  View metadata report for BODC series reference number 1158593
11586002011-08-14 10:24 55° 13' 14" N  2° 33' 22" E  View metadata report for BODC series reference number 1158600
11586122011-08-14 13:30 54° 50' 6" N  2° 33' 56" E  View metadata report for BODC series reference number 1158612
11586242011-08-14 17:01 54° 20' 35" N  2° 43' 7" E  View metadata report for BODC series reference number 1158624
11586362011-08-15 05:05 54° 23' 55" N  1° 11' 22" E  View metadata report for BODC series reference number 1158636
11586482011-08-15 07:46 54° 21' 0" N  0° 41' 20" E  View metadata report for BODC series reference number 1158648
11586612011-08-15 10:59 54° 48' 10" N  0° 25' 16" E  View metadata report for BODC series reference number 1158661
11586732011-08-15 13:34 54° 50' 3" N  0° 13' 5" E  View metadata report for BODC series reference number 1158673
11586852011-08-16 05:02 55° 20' 16" N  0° 33' 38" E  View metadata report for BODC series reference number 1158685
11586972011-08-16 08:42 55° 44' 25" N  0° 10' 59" E  View metadata report for BODC series reference number 1158697
11587042011-08-16 11:54 55° 53' 30" N  0° 24' 20" W  View metadata report for BODC series reference number 1158704
11587162011-08-16 16:21 56° 23' 48" N  0° 23' 24" E  View metadata report for BODC series reference number 1158716
11587282011-08-17 03:57 56° 15' 37" N  2° 10' 4" W  View metadata report for BODC series reference number 1158728
11587412011-08-17 07:11 56° 12' 48" N  1° 30' 45" W  View metadata report for BODC series reference number 1158741
11587532011-08-17 10:07 55° 55' 4" N  1° 8' 49" W  View metadata report for BODC series reference number 1158753
11587652011-08-17 13:08 56° 17' 19" N  1° 0' 5" W  View metadata report for BODC series reference number 1158765