Cruise inventory

RV Cirolana CIR4/77

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR4/77
Cruise period1977-04-06 — 1977-04-27
Port of departureGrimsby, United Kingdom
Port of returnGrimsby, United Kingdom
Objectives1. To carry out a mackerel egg and larval survey in the Celtic Sea -
Porcupine Bank area.
2. To study the vertical distribution of mackerel eggs and larvae.
3. To study the development rates of mackerel eggs and larvae.
4. To identify fish concentrations by trawling.
5. To measure temperature, salinity and chlorophyll levels at each station using the environmental monitoring system.
6. To carry out in situ target strength measurements on blue whiting where suitable concentrations are found.
7. To catch and biologically sample blue whiting.
8. To collect fish samples for mercury content analyses.
9. To collect material from as wide a range of species as possible for
histological muscle fibre analysis.
10. To collect and deep freeze spleens from blue whiting/mackerel for
the Institute of Cancer Research.
Chief scientistP O Johnson (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
ProjectMackerel Egg and Larval Survey
Cruise reportRV Cirolana CIR4/77 cruise report ci04_77.pdf — access key 'C' (0.29 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
Bay of Biscay
North East Atlantic Ocean (limit 40W)
Track chartsRV Cirolana CIR4/77 cruise track — trk1899a.html RV Cirolana CIR4/77 cruise track — trk1899b.html
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 2778
Description: T only
Water bottle stationsQuantity: number of stations = 74
Description: surface only
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 74
PhytoplanktonQuantity: number of stations = 74
ZooplanktonQuantity: number of stations = 74
Eggs and larvaeQuantity: number of stations = 74
Description: 1300nm distribution,physiology
Acoustic reflection on marine organisms.Quantity: track kilometres = 4444.8