Cruise inventory

RV Cirolana CIR4/01

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR4/01
Cruise period2001-04-24 — 2001-05-20
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
ObjectivesPlankton survey for mackerel and horse mackerel eggs. Part of an ICES coordinated international survey conducted every 3 years to provide an estimate of spawning stock biomass for both mackerel and horse mackerel. Fishing to estimate fecundity and atresia of mackerel.
Chief scientistStephen Paul Milligan (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
ProjectICES Tri-ennial Mackerel and Horse mackerel survey - WGMEGS
Coordinating bodyICES
Cruise reportRV Cirolana CIR4/01 cruise report ciro4_01.pdf — access key 'C' (0.08 MB) 
Ocean/sea areas 
GeneralNorth Atlantic Ocean
SpecificAcross the Continental Shelf from West of Ireland to Northern Biscay, including the Celtic Sea
Track chartsRV Cirolana CIR4/01 cruise track — ciro4_01trk.pdf (0.06 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Description: Continuous measurement (every 10 mins) of surface (3m) salinity and temperature using a Chelsea instruments CTD
Subsurface temperature and salinity measurementsQuantity: number of stations = 150
Description: Double oblique tows with a GULF III type, high-speed plankton sampler, fitted with a 270 micro mesh net + CTD which continually logged temperature and salinity
Biology and fisheries 
ZooplanktonQuantity: number of stations = 150
Description: Double oblique tows with a GULF III type, high-speed plankton sampler, fitted with a 270 micro mesh net + CTD which continually logged temperature and salinity
Eggs and larvaeQuantity: number of stations = 150
Description: Double oblique tows with a GULF III type, high-speed plankton sampler, fitted with a 270 micro mesh net + CTD which continually logged temperature and salinity
Pelagic fishQuantity: number of stations = 9
Description: Rods, lines and feathers to catch mackerel alive for subsequent histological examination
Pelagic fishQuantity: number of stations = 11
Description: Large peleagic FOTO trawl fished at the surface in the dark to capture populations of spawning mackerel