Planned maintenance — 19th January 2018 12:00 to 22nd January 2018 14:00 [more]

Cruise inventory

RV Cirolana CIR4A/95

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR4A/95
Cruise period1995-04-21 — 1995-05-22
Port of departureLowestoft, United Kingdom
Port of returnHolyhead, United Kingdom
Objectives1. To participate in the International Mackerel and Horse Mackerel Egg Survey of the western and southern stocks in suvey period 4. England and Wales have responsibility for sampling the standard grid between latitudes 43ºN and 49º 30'N.
2. To sample mackerel with the Danish Foto trawl and with handlines to determine the levels of atresia in the female spawning stock.
3. To incubate artificially fertilised mackerel eggs through stage I over the temperature range 6º - 17ºC making observations of development rate at between 1 and 3 hourly intervals. To sample eggs at each development stage for lipid analysis.
Chief scientistJohn H Nichols (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
ProjectInternational Mackerel & Horse Mackerel Egg Survey
Cruise reportRV Cirolana CIR4A/95 cruise report ci4a_95.pdf — access key 'C' (0.12 MB) 
Ocean/sea areas 
GeneralBay of Biscay
North East Atlantic Ocean (limit 40W)
SpecificCeltic Sea, SW Approaches,Bay of Biscay
Track chartsRV Cirolana CIR4A/95 cruise track — trk4150a.html RV Cirolana CIR4A/95 cruise track — trk4150b.html
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 15
Description: continuous T & S
Water bottle stationsQuantity: number of stations = 81
Description: surface S only
CTD stationsQuantity: number of stations = 83
Biology and fisheries 
PhytoplanktonQuantity: number of hauls = 83
Description: mackerel egg survey
ZooplanktonQuantity: number of hauls = 83
Description: mackerel egg survey