FRV Explorer 5/77
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Explorer (74EX) |
| Cruise identifier | 5/77 |
| Cruise period | 1977-06-20 — 1977-07-04 |
| Status | Completed |
| Port of return | Aberdeen, United Kingdom |
| Purpose | Research |
| Objectives | 1) To take part in an international trawling survey of pelagic 0-group gadoids in the North Sea
2) Samples of 0-group gadoids were deep forzen for use by the Torry Research Station and the Lowestoft Laboratory 3) Otoliths of sprats and sandeels were collected on an area basis Saling was delayed till the 20/06/1977 due to shortages of engine room crew. ''Explorer'' was forced to anchor off Clyth Ness whilst leaking condenser tubes were replaced. A short call at Lerwick was made on the 27/06/1977 for a crew member to see a doctor. Further leakages in the condenser tubes forced the ship to anchor in Inganess Bay on the 30/06/1977 for 24 hours. |
| Chief scientist | John R G Hislop (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
| Cruise report |  (1.12 MB) |
| Ocean/sea areas | |
| General | Irish Sea and St. George's Channel North East Atlantic Ocean (limit 40W) |
| Specific | Buchan Ness, Clyth Ness, Shetland and Orkney Islands, outer Moray Firth |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Water bottle stations | Quantity: number of stations = 10 |
| Chemical oceanography | |
| Phosphate | Quantity: 10 |
| Nitrate | Quantity: 10 |
| Silicate | Quantity: 10 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: 10 |
| Zooplankton | Quantity: 25 |
| Pelagic fish | Quantity: number of hauls = 36 Description: survey:identification,distribution of post larvae stage. Haddock, cod, saithe, whiting and Norway pout were caught. By catches of sprats and sandeels. 86 pairs of sprat ovaries were preserved in formalin for fecundity studies |
| Demersal fish | Quantity: number of hauls = 36 Description: survey:identification,distribution of post larvae stage. Haddock, cod, saithe, whiting and Norway pout were caught. By catches of sprats and sandeels. 86 pairs of sprat ovaries were preserved in formalin for fecundity studies |
| Other biological/fisheries measurement | Quantity: number of hauls = 36 Description: survey:identification,distribution of post larvae stage. Haddock, cod, saithe, whiting and Norway pout were caught. By catches of sprats and sandeels. 86 pairs of sprat ovaries were preserved in formalin for fecundity studies |
