RV Cirolana CIR8/81

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR8/81
Cruise period1981-08-26 — 1981-09-21
Port of departureGrimsby, United Kingdom
Port of returnImmingham, United Kingdom
Objectives1. To carry out a groundfish survey of the North Sea.
2. To obtain the length and age distribution of cod, whiting, haddock and plaice by ICES Working Group sampling areas.
3. To examine fish stomachs, especially in respect of predation upon other fish, and to preserve stomachs for the ICES Working Group on Multispecies Models.
4. To collect water samples and fish fillets for caesium studies (AEP 1).
5. To make an underwater camera survey at benthos (Dyer).
6. To compare trawl catches of benthos with those of an Agassiz Trawl (Dyer).
7. To collect fish tissues for genetic studies (Jamieson).

Late aims (received too late to appear on cruise programme)

8. To collect plaice tissues for bochemical analysis (Witthames).
9. To collect rectal glands from Raja radicta (UEA).
10. To collect fish and benthos specimens for various organisations.

All the aims were successfully completed.
Chief scientistJohn G Pope (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
ProjectGround Fish Survey by ICES
Coordinating bodyICES
Cruise reportRV Cirolana CIR8/81 cruise report ci8_81.pdf (0.35 MB) 
Ocean/sea areas 
GeneralNorth Sea
Norwegian Sea
North East Atlantic Ocean (limit 40W)
SpecificNorth Sea
Track chartsRV Cirolana CIR8/81 cruise track — trk2650.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 44
Description: water samples taken.
Chemical oceanography 
RadioactivityQuantity: number of samples = 56
Biology and fisheries 
Demersal fishQuantity: number of hauls = 126
Demersal fishQuantity: number of hauls = 25
Description: Agassiz trawls.
Demersal fishQuantity: number of hauls = 56
Description: survey:pathology,energy transfers,population
Geology and geophysics 
Bottom photographyDescription: colour photography taken from all but two of the primary stations.