RV Clione CLI4B/67
Cruise summary report
|Ship name (ship code)||RV Clione (74CN)|
|Cruise period||1967-06-08 — 1967-06-15|
|Port of departure||Fleetwood, United Kingdom|
|Objectives||1. To mark approximately 2,500 plaice.
2. To obtain benthos samples.
3. To make a pilot scale radiological survey of the Irish Sea prior to a major survey later in the year.
4. Trials of gamma-spectrometry equipment to monitor in situ wind scale area sea bed and sea water.
Samples of other fish species and benthos for activity analysis were obtained from 3 hauls
|Chief scientist||Dennis S Woodhead (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)|
|Cruise report||(0.14 MB)|
|General||Irish Sea and St. George's Channel|
|Specific||South of Windscale effluent outfall, off Seascale, Solway Firth, Windscale-Holyhead, Holyhead-Dublin|
|Radioactivity||Quantity: number of stations = 8|
Description: Radiological survey: stations between Windscale and Holyhead, and Holyhead and Dublin
|Bottom deposits||Quantity: number of stations = 6|
Description: 2 stations in between hauls made with the gamma-spectrometry probe. At each station a seabed sample was taken for reference purposes. While at anchor off Seascale, the gamma-spectrometry probe was used to monitor possible time-variations in the sea-water activity at 5 fathoms. A series of gamma-spectrometry probe stations were made on a line running northwards from the pipeline outfall to the South Workington buoy. 3 additional stations close to the pipeline from the CEGB nuclear power station at Wylfa, 1 near to the pipeline outfall from AEE Winfrith
|Biology and fisheries|
|Seston||Quantity: number of hauls = 9|
Description: Made in the Solway Firth with the Tin Tow Net to obtain bulk plankton samples for activity analysis
|Demersal fish||Quantity: number of hauls = 7|
Description: 435 fish yielded for marking from 1 haul in 2 miles south of the Windscale effluent outfall, 3 hauls yielding 1280 plaice.