Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

RV Cirolana CIR7A/93

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR7A/93
Cruise period1993-07-08 — 1993-07-25
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To carry out a plankton survey using a 53cm high speed tow net fitted with the Guildline CTD monitoring system, to determine the distribution and abundance of crab (Cancer pagurus) larvae in relation to fishing grounds and sea bed sediments.
2. To study the vertical distribution of crab larvae.
3. To continuously monitor the chlorophyll 'a' fluorescence, temperature, and salinity of sub-surface sea water.
4. To take discrete sub-surface sea water samples for salinity determination at each plankton station and throughout the working area.
Chief scientistDavid B Bennett (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Cirolana CIR7A/93 cruise report ci7a_93.pdf — access key 'C' (0.24 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificNorth Sea
Track chartsRV Cirolana CIR7A/93 cruise track — trk3971a.html RV Cirolana CIR7A/93 cruise track — trk3971b.html
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 15
Description: +H17, continuous
Water bottle stationsQuantity: number of stations = 57
Description: Surface S only
Subsurface temperature and salinity measurementsQuantity: number of deployments = 322
Description: +B02,Guildline CTD on tow net
Optics (eg underwater light levels)Quantity: activity duration in days = 15
Description: +H17, continuous
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of deployments = 322
Description: +B02,Guildline CTD on tow net
ZooplanktonQuantity: number of deployments = 322
Description: 53 cm high tow net for crab larvae