Cruise Info. | |
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Ship name (ship code) | FRV Explorer (74EX) |
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Cruise identifier | 6/69 |
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Cruise period | 1969-09-24 — 1969-10-21 |
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Status | Completed |
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Port of departure | Aberdeen, United Kingdom |
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Port of return | Aberdeen, United Kingdom |
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Purpose | Research |
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Objectives | 1) Trawling to sample blue whiting
2) An echo-survey was made to investigate the extent of mid-water traces thought to be caused by blue whiting. The Marconiecho-sounder was run continuously during the cruise
3) 2 Fleets of creels were laid on the edge of the continental shelf
4) A sample of Rabbit-fish was collected for an examination of their possible toxic properties by the Torry Reasearch Station
Work had to be suspended at times during the cruise due to unsuitable weather. Work was abandoned from the 07/10/1969 till the 08/10/1969 due to bad weather. The ship stopped at Torshavn from the 10/10/1969 till the 12/10/1969 to repair the ''netzonde'' winch, which was unsuccessful. |
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Chief scientist | Roger S Bailey (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
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Cruise report | (0.25 MB) |
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Ocean/sea areas | |
General | North Atlantic Ocean North Sea Norwegian Sea |
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Specific | Rockall Bank, Rosemary Bank, Lousy Bank, Rosengarten Bank, Faroes, Faroe-Iceland ridge, Northern edge of Faroe plateau, NE of Shetlands |
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Measurements | |
Biology and fisheries | |
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Phytoplankton | Quantity: number of hauls = 12 Description: Plankton sampling with the W.P.3 net and a number of horizontal tows were made to determine the composition of the echo-traces |
Zooplankton | Quantity: number of hauls = 12 Description: Plankton sampling with the W.P.3 net and a number of horizontal tows were made to determine the composition of the echo-traces |
Pelagic fish | Quantity: number of hauls = 25 Description: 6 hauls made with the mid-water trawl, blue whiting, saithe, sebastes and myctophids caught. 9 hauls made with the Engels trawl, Ray's dream, dealfish, lumpsuckers, horse mackerel, blue whiting and myctophids caught. 10 hauls were made with the SARO trawl |
Exploratory fishing | Quantity: number of hauls = 25 Description: 6 hauls made with the mid-water trawl, blue whiting, saithe, sebastes and myctophids caught. 9 hauls made with the Engels trawl, Ray's dream, dealfish, lumpsuckers, horse mackerel, blue whiting and myctophids caught. 10 hauls were made with the SARO trawl |