Vikingbank 2021825
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | Vikingbank (58Q9) |
| Cruise identifier | 2021825 |
| Cruise period | 2021-03-09 — 2021-03-24 |
| Status | Completed |
| Port of departure | Bergen, Norway |
| Port of return | Bergen, Norway |
| Purpose | Research |
| Objectives | Catch 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 scientist | Michael Breen (Institute of Marine Research, Norway) |
| Cruise report |  (3.74 MB) |
| Ocean/sea areas | |
| General | Celtic Sea |
| Specific | Porcupine Bank |
| Track charts | (0.20 MB) |
| Measurements | |
| Physical oceanography | |
| CTD stations | Quantity: number of hauls = 13 Description: Depth & temperature data from loggers on fishing gear |
| Chemical oceanography | |
| Oxygen | Quantity: number of hauls = 1 Description: Oxygen data – from optical logger – in codend during pumping |
| Biology and fisheries | |
| Pelagic fish | Quantity: number of hauls = 2 Description: Length and weight of individual blue whiting – from vitality samples |
| Gear research | Quantity: number of hauls = 13 Description: Gear performance data – pelagic trawl & catch control systems |
| Other biological/fisheries measurement | Quantity: number of hauls = 2 Description: Vitality and injuries of blue whiting during capture |
| Other biological/fisheries measurement | Quantity: number of hauls = 10 Description: Behaviour of blue whiting during capture process |
| Moorings, landers, buoys | |
| Physical oceanography | |
| CTD stations | 54° 1' 48" N 12° 7' 36" W — 20Mar21 (Haul10) - Depth & temperature from loggers on trawl |
| CTD stations | 54° 3' 53" N 12° 35' 23" W — 16Mar21 (Haul06) - Depth & temperature from loggers on trawl |
| CTD stations | 53° 57' 6" N 13° 17' 41" W — 14Mar21 (Haul02) - Depth & temperature from loggers on trawl |
| CTD stations | 59° 59' 53" N 4° 30' 17" E — 09Mar21 (Test01) - Depth & temperature from loggers on trawl |
| CTD stations | 56° 33' 53" N 9° 11' 48" W — 12Mar21 (Test03) - Depth & temperature from loggers on trawl |
| CTD stations | 53° 58' 11" N 12° 24' 6" W — 16Mar21 (Haul07) - Depth & temperature from loggers on trawl |
| CTD stations | 53° 55' 0" N 13° 28' 36" W — 14Mar21 (Haul01) - Depth & temperature from loggers on trawl |
| CTD stations | 53° 58' 23" N 12° 51' 47" W — 16Mar21 (Haul05) - Depth & temperature from loggers on trawl |
| CTD stations | 53° 54' 35" N 12° 41' 17" W — 20Mar21 (Haul09) - Depth & temperature from loggers on trawl |
| CTD stations | 59° 52' 23" N 4° 14' 42" E — 09Mar21 (Test02) - Depth & temperature from loggers on trawl |
| CTD stations | 53° 51' 54" N 13° 39' 17" W — 15Mar21 (Haul04) - Depth & temperature from loggers on trawl |
| CTD stations | 54° 7' 11" N 11° 50' 17" W — 20Mar21 (Haul08) - Depth & temperature from loggers on trawl |
| CTD stations | 53° 56' 35" N 13° 17' 53" W — 15Mar21 (Haul03) - Depth & temperature from loggers on trawl |
| Chemical oceanography | |
| Oxygen | 53° 56' 35" N 13° 17' 53" W — 15Mar21 (Haul03) – Oxygen conc. in codend during pumping |
| Biology and fisheries | |
| Pelagic fish | 53° 51' 54" N 13° 39' 17" W — 15Mar21 (Haul04) – Individual length & weight of blue whiting |
| Pelagic fish | 53° 56' 35" N 13° 17' 53" W — 15Mar21 (Haul03) – Individual length & weight of blue whiting |
| Gear research | 53° 55' 0" N 13° 28' 36" W — 14Mar21 (Haul01) - Gear performance data – pelagic trawl |
| Gear research | 53° 58' 23" N 12° 51' 47" W — 16Mar21 (Haul05) - Gear performance data – pelagic trawl |
| Gear research | 56° 33' 53" N 9° 11' 48" W — 12Mar21 (Test03) - Gear performance data – pelagic trawl |
| Gear research | 54° 3' 53" N 12° 35' 23" W — 16Mar21 (Haul06) - Gear performance data – pelagic trawl |
| Gear research | 53° 51' 54" N 13° 39' 17" W — 15Mar21 (Haul04) - Gear performance data – pelagic trawl |
| Gear research | 53° 58' 11" N 12° 24' 6" W — 16Mar21 (Haul07) - Gear performance data – pelagic trawl |
| Gear research | 53° 56' 35" N 13° 17' 53" W — 15Mar21 (Haul03) - Gear performance data – pelagic trawl |
| Gear research | 54° 7' 11" N 11° 50' 17" W — 20Mar21 (Haul08) - Gear performance data – pelagic trawl |
| Gear research | 53° 57' 6" N 13° 17' 41" W — 14Mar21 (Haul02) - Gear performance data – pelagic trawl |
| Gear research | 53° 54' 35" N 12° 41' 17" W — 20Mar21 (Haul09) - Gear performance data – pelagic trawl |
| Gear research | 54° 1' 48" N 12° 7' 36" W — 20Mar21 (Haul10) - Gear performance data – pelagic trawl |
| Gear research | 59° 59' 53" N 4° 30' 17" E — 09Mar21 (Test01) - Gear performance data – pelagic trawl |
| Gear research | 59° 52' 23" N 4° 14' 42" E — 09Mar21 (Test02) - Gear performance data – pelagic trawl |
| Other biological/fisheries measurement | 53° 51' 54" N 13° 39' 17" W — 15Mar21 (Haul04) - Vitality and injuries of blue whiting |
| Other biological/fisheries measurement | 54° 1' 48" N 12° 7' 36" W — 20Mar21 (Haul10) - Behaviour of blue whiting during capture |
| Other biological/fisheries measurement | 54° 7' 11" N 11° 50' 17" W — 20Mar21 (Haul08) - Behaviour of blue whiting during capture |
| Other biological/fisheries measurement | 53° 58' 11" N 12° 24' 6" W — 16Mar21 (Haul07) - Behaviour of blue whiting during capture |
| Other biological/fisheries measurement | 54° 3' 53" N 12° 35' 23" W — 16Mar21 (Haul06) - Behaviour of blue whiting during capture |
| Other biological/fisheries measurement | 53° 58' 23" N 12° 51' 47" W — 16Mar21 (Haul05) - Behaviour of blue whiting during capture |
| Other biological/fisheries measurement | 53° 54' 35" N 12° 41' 17" W — 20Mar21 (Haul09) - Behaviour of blue whiting during capture |
| Other biological/fisheries measurement | 53° 51' 54" N 13° 39' 17" W — 15Mar21 (Haul04) - Behaviour of blue whiting during capture |
| Other biological/fisheries measurement | 53° 56' 35" N 13° 17' 53" W — 15Mar21 (Haul03) - Vitality and injuries of blue whiting |
| Other biological/fisheries measurement | 53° 56' 35" N 13° 17' 53" W — 15Mar21 (Haul03) - Behaviour of blue whiting during capture |
| Other biological/fisheries measurement | 53° 57' 6" N 13° 17' 41" W — 14Mar21 (Haul02) - Behaviour of blue whiting during capture |
| Other biological/fisheries measurement | 53° 55' 0" N 13° 28' 36" W — 14Mar21 (Haul01) - Behaviour of blue whiting during capture |
