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Vikingbank 2021825

Cruise summary report

Cruise Info. 
Ship name (ship code)Vikingbank (58Q9)
Cruise identifier2021825
Cruise period2021-03-09 — 2021-03-24
StatusCompleted
Port of departureBergen, Norway
Port of returnBergen, Norway
PurposeResearch
ObjectivesCatch Control in Blue Whiting Fishing

The aim of this research cruise was to further develop the catch control methods and technologies initially investigated in cruise one by addressing the following objectives:

1. Investigate the effectiveness of three designs of catch control rigs to retain target catch during fishing operations and then release excess catch once the catch limited is reached.
2. Investigate the effectiveness of the catch limit release mechanism on the trawl codend (Prototype by Foss Tech).
3. Monitor the geometry of the trawl and codend, particularly during haulback.
4. Develop methods for the rapid release of the pump from the trawl codend, as a countermeasure to sinking codends.
5. Develop methods to assess the vitality and injuries of fish being release from the catch control rigs.
Chief scientistMichael Breen (Institute of Marine Research, Norway)
Cruise reportVikingbank 2021825 cruise report vikingbank_2021825.pdf (3.74 MB) 
Ocean/sea areas 
GeneralCeltic Sea
SpecificPorcupine Bank
Track chartsVikingbank 2021825 cruise track — vikingbank_2021825trk.pdf (0.20 MB) 
Measurements 
Physical oceanography 
CTD stationsQuantity: number of hauls = 13
Description: Depth & temperature data from loggers on fishing gear
Chemical oceanography 
OxygenQuantity: number of hauls = 1
Description: Oxygen data – from optical logger – in codend during pumping
Biology and fisheries 
Pelagic fishQuantity: number of hauls = 2
Description: Length and weight of individual blue whiting – from vitality samples
Gear researchQuantity: number of hauls = 13
Description: Gear performance data – pelagic trawl & catch control systems
Other biological/fisheries measurementQuantity: number of hauls = 2
Description: Vitality and injuries of blue whiting during capture
Other biological/fisheries measurementQuantity: number of hauls = 10
Description: Behaviour of blue whiting during capture process
Moorings, landers, buoys 
Physical oceanography 
CTD stations53° 55' 0" N  13° 28' 36" W — 14Mar21 (Haul01) - Depth & temperature from loggers on trawl
CTD stations53° 56' 35" N  13° 17' 53" W — 15Mar21 (Haul03) - Depth & temperature from loggers on trawl
CTD stations53° 58' 23" N  12° 51' 47" W — 16Mar21 (Haul05) - Depth & temperature from loggers on trawl
CTD stations53° 58' 11" N  12° 24' 6" W — 16Mar21 (Haul07) - Depth & temperature from loggers on trawl
CTD stations53° 54' 35" N  12° 41' 17" W — 20Mar21 (Haul09) - Depth & temperature from loggers on trawl
CTD stations54° 3' 53" N  12° 35' 23" W — 16Mar21 (Haul06) - Depth & temperature from loggers on trawl
CTD stations59° 59' 53" N  4° 30' 17" E — 09Mar21 (Test01) - Depth & temperature from loggers on trawl
CTD stations59° 52' 23" N  4° 14' 42" E — 09Mar21 (Test02) - Depth & temperature from loggers on trawl
CTD stations53° 51' 54" N  13° 39' 17" W — 15Mar21 (Haul04) - Depth & temperature from loggers on trawl
CTD stations54° 1' 48" N  12° 7' 36" W — 20Mar21 (Haul10) - Depth & temperature from loggers on trawl
CTD stations54° 7' 11" N  11° 50' 17" W — 20Mar21 (Haul08) - Depth & temperature from loggers on trawl
CTD stations56° 33' 53" N  9° 11' 48" W — 12Mar21 (Test03) - Depth & temperature from loggers on trawl
CTD stations53° 57' 6" N  13° 17' 41" W — 14Mar21 (Haul02) - Depth & temperature from loggers on trawl
Chemical oceanography 
Oxygen53° 56' 35" N  13° 17' 53" W — 15Mar21 (Haul03) – Oxygen conc. in codend during pumping
Biology and fisheries 
Pelagic fish53° 56' 35" N  13° 17' 53" W — 15Mar21 (Haul03) – Individual length & weight of blue whiting
Pelagic fish53° 51' 54" N  13° 39' 17" W — 15Mar21 (Haul04) – Individual length & weight of blue whiting
Gear research54° 3' 53" N  12° 35' 23" W — 16Mar21 (Haul06) - Gear performance data – pelagic trawl
Gear research56° 33' 53" N  9° 11' 48" W — 12Mar21 (Test03) - Gear performance data – pelagic trawl
Gear research53° 58' 23" N  12° 51' 47" W — 16Mar21 (Haul05) - Gear performance data – pelagic trawl
Gear research53° 51' 54" N  13° 39' 17" W — 15Mar21 (Haul04) - Gear performance data – pelagic trawl
Gear research59° 52' 23" N  4° 14' 42" E — 09Mar21 (Test02) - Gear performance data – pelagic trawl
Gear research59° 59' 53" N  4° 30' 17" E — 09Mar21 (Test01) - Gear performance data – pelagic trawl
Gear research53° 57' 6" N  13° 17' 41" W — 14Mar21 (Haul02) - Gear performance data – pelagic trawl
Gear research53° 58' 11" N  12° 24' 6" W — 16Mar21 (Haul07) - Gear performance data – pelagic trawl
Gear research54° 7' 11" N  11° 50' 17" W — 20Mar21 (Haul08) - Gear performance data – pelagic trawl
Gear research53° 54' 35" N  12° 41' 17" W — 20Mar21 (Haul09) - Gear performance data – pelagic trawl
Gear research53° 55' 0" N  13° 28' 36" W — 14Mar21 (Haul01) - Gear performance data – pelagic trawl
Gear research54° 1' 48" N  12° 7' 36" W — 20Mar21 (Haul10) - Gear performance data – pelagic trawl
Gear research53° 56' 35" N  13° 17' 53" W — 15Mar21 (Haul03) - Gear performance data – pelagic trawl
Other biological/fisheries measurement54° 1' 48" N  12° 7' 36" W — 20Mar21 (Haul10) - Behaviour of blue whiting during capture
Other biological/fisheries measurement53° 54' 35" N  12° 41' 17" W — 20Mar21 (Haul09) - Behaviour of blue whiting during capture
Other biological/fisheries measurement54° 7' 11" N  11° 50' 17" W — 20Mar21 (Haul08) - Behaviour of blue whiting during capture
Other biological/fisheries measurement53° 58' 23" N  12° 51' 47" W — 16Mar21 (Haul05) - Behaviour of blue whiting during capture
Other biological/fisheries measurement53° 51' 54" N  13° 39' 17" W — 15Mar21 (Haul04) - Behaviour of blue whiting during capture
Other biological/fisheries measurement53° 56' 35" N  13° 17' 53" W — 15Mar21 (Haul03) - Vitality and injuries of blue whiting
Other biological/fisheries measurement53° 56' 35" N  13° 17' 53" W — 15Mar21 (Haul03) - Behaviour of blue whiting during capture
Other biological/fisheries measurement53° 57' 6" N  13° 17' 41" W — 14Mar21 (Haul02) - Behaviour of blue whiting during capture
Other biological/fisheries measurement53° 55' 0" N  13° 28' 36" W — 14Mar21 (Haul01) - Behaviour of blue whiting during capture
Other biological/fisheries measurement54° 3' 53" N  12° 35' 23" W — 16Mar21 (Haul06) - Behaviour of blue whiting during capture
Other biological/fisheries measurement53° 58' 11" N  12° 24' 6" W — 16Mar21 (Haul07) - Behaviour of blue whiting during capture
Other biological/fisheries measurement53° 51' 54" N  13° 39' 17" W — 15Mar21 (Haul04) - Vitality and injuries of blue whiting