Cruise Info. | |
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Ship name (ship code) | FRV Explorer (74EX) |
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Cruise identifier | 4/75 |
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Cruise period | 1975-05-20 — 1975-06-09 |
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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) The Faroe pre-recruit demersal fish and environmental survey
2) The Fair Isle-Munken hydrographic line
3) The ICES Base line pollution survey for Faroe Bank and Faroe plateau areas
4) The training of the new ASO's in all aspectsof the demersal team's requirements and of general shipboard duties
''Explorer'' had to be diverted by Kirkwall then returned to Aberdeen on the 21/05/1975 to land a sick member of crew. The ship sailed on the 22/05/1975 with a replacement. The ship docked at Torshavn on the 30/05/1975 for the mid cruise break and sailed on the 31/05/1975. ''Explorer'' called at Toshavn on the 05/06/1975 to pick up the bosun and a crew member, and departed on the 06/06/1975. Main engine trouble caused further work to be abandoned and the ship steamed to Inganess Bay on the 08/06/1975 for repairs.
Samples of Loglio forbesii were frozen for analysis and aquarium use. Chlanys opercularis were taken and frozen samples were put down for size and maturity studies. The age determination of haddock was done during the cruise, and samples of whiting were frozen for subsequent length weight analysis. Samples of halibut were sealed separately in bags and deep frozen. |
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Chief scientist | Sidney D E Devlin (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
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Cruise report | (0.21 MB) |
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Ocean/sea areas | |
General | Irish Sea and St. George's Channel North East Atlantic Ocean (limit 40W) |
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Specific | Fair Isle-Munken area, Faroe Bank, Faroe plateau area |
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Measurements | |
Physical oceanography | |
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Water bottle stations | Quantity: number of stations = 22 Description: For temperature and salinity. Samples taken at 3, 50, 100, 200, 300, 400, 500, 600, 700, 800, and bottom. |
Chemical oceanography | |
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Oxygen | Quantity: 22 Description: Samples taken at 3, 50, 100, 200, 300, 400, 500, 600, 700, 800, and bottom. |
Phosphate | Quantity: 22 Description: Samples taken at 3, 50, 100, 200, 300, 400, 500, 600, 700, 800, and bottom. |
Silicate | Quantity: 22 Description: Samples taken at 3, 50, 100, 200, 300, 400, 500, 600, 700, 800, and bottom. |
Contamination | |
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Trace metals | Description: in fish |
Biology and fisheries | |
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Demersal fish | Quantity: number of hauls = 49 Description: using a 48' Aberdeen trawl and a small mesh cover for population structures,special attention to pre-recruits. A 73 mm codend was used throughout. The otoliths of 1628 haddock and 1017 whiting were mounted and read during the cruise |