Cruise inventory

RV Clione CLI6/68

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Clione (74CN)
Cruise identifierCLI6/68
Cruise period1968-04-30 — 1968-05-10
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To carry out routine sampling of turbot from the north-central North Sea.
2. To bring back suitable live turbot for the laboratory rearing of eggs and larvae.
3. To carry out artificial fertilization at sea, returning fertilized eggs live to the laboratory.
4. To carry out a tin tow net survey of the area for turbot eggs and larvae.
5. To collect and bring back a quantity of zooplankton suitable for the laboratory feeding of larvae.
6. To collect live spawning fish for Dr Purdom (all species).
7. To collect and freeze flatfish hearts and muscle for Mr Iles.
8. To collect and freeze bulk skinless cod fillets and cod guts for Mr Birkett.
9. To collect live turbot tapeworms and their eggs for Mr Davey,
Commonwealth Bureau of Helminthology.
10. To measure sea-bottom and sea-surface temperatures along the gas pipeline cast of the Haisborough light-vessel .

A short tin tow net survey was carried out in and around Cleaver Bank in the area where the heaviest catches of turbot were obtained. A quantity of small zooplankton was collected using the 200 m.p.i International net and placed in carboys of seawater and returned live to the laboratory for the feeding of larvae
Chief scientistRobert R Dickson (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Clione CLI6/68 cruise report clione6_68.pdf — access key 'C' (0.20 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificCleaver Bank, Tail End, Middle Rough, Inner Shoal, off Mablethorpe, Hospital Ground,and the southern end of the Pits
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of stations = 3
Description: Surface and Bottom sea temperatures were made along the gas pipeline east of the Haisborough light-vessel
Subsurface temperature and salinity measurementsQuantity: number of stations = 3
Description: Surface and Bottom sea temperatures were made along the gas pipeline east of the Haisborough light-vessel
Biology and fisheries 
Eggs and larvaeQuantity: number of hauls = 2
Description: Made with the 2 metre Stramin net. 1 successful 3/4-hour haul obtained brill and sole eggs
Demersal fishQuantity: number of specimens = 20
Description: Mature turbot brought back to the laboratory
Demersal fishQuantity: number of specimens = 226
Description: 55 Turbot and 171 brill were caught
Demersal fishQuantity: number of specimens = 75
Description: 10 spawning lemon soles and 65 spawning dover soles were brought back to the laboroatory
Demersal fishQuantity: number of samples = 75
Description: Hearts and muscle-blocks were taken from flatfish: 12 plaice, 12 brill, 12 dover sole, 12 lemon sole, 12 dabs, 6 flounders and 9 turbot
Demersal fishQuantity: number of hauls = 46
Description: All hauls were 1 1/2 hours duration, bar one haul of 1 1/4 hours at Cleaver bank and another of 2 hours at Cleaver Bank
Occasional standard measurementsQuantity: number of samples = 3
Description: Bothriocephalus scorpii kept in Tyrode's solution