Cruise summary report
Cruise Info. | |
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Ship name (ship code) | RV Ernest Holt (74EH) |
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Cruise identifier | 9/67 |
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Cruise period | 1967-11-06 — 1967-12-07 |
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Status | Completed |
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Port of departure | Grimsby, United Kingdom |
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Port of return | Grimsby, United Kingdom |
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Purpose | Research |
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Objectives | By comparative fishing with RV EXPLORER:
1. to compare the catches of the most recent form of the Saro trawl with
those of a Granton trawl when both are rigged with 60 fm bridles;
2. to investigate further an apparent gear/ship interaction which has
complicated previous comparative fishing results. |
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Chief scientist | A R Margetts (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory) |
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Cruise report | (0.21 MB) |
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Ocean/sea areas | |
General | North Sea Norwegian Sea |
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Measurements | |
Physical oceanography | |
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Surface measurements underway (T,S) | Quantity: number of stations = 2 Description: surface water samples |
Chemical oceanography | |
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Oxygen | Quantity: number of stations = 2 Description: surface water samples |
Phosphate | Quantity: number of stations = 2 Description: surface water samples |
Nitrate | Quantity: number of stations = 2 Description: surface water samples |
Silicate | Quantity: number of stations = 2 Description: surface water samples |
Biology and fisheries | |
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Biochemical measurements (eg lipids, amino acids) | Description: routine otolith samples of cod, haddock and coalfish |
Gear research | Quantity: number of hauls = 36 Description: Saro vs Granton trawl comparison |