Cruise inventory

FRV Clupea 0691C

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier0691C
Cruise period1991-04-08 — 1991-04-26
Port of departureKyle of Lochalsh, United Kingdom
Port of returnArdrossan, United Kingdom
Objectives1. To carry out herring egg surveys at Ballantrae and at South Arran using a "Day" grab, ROV "Sea-sprint" and divers to map the extent of egg deposition and to obtain quantitative samples to provide estimates of egg density and mortality.
2. To use the trawl to sample herring present at Ballantrae and South Arran to obtain data on the age structure of the stock.
3. To service a current meter laid at South Arran, to use a towed CTD to establish temperature and salinity profiles in the area and carry out a variety of hydrographic and other sampling operations at Ballantrae and Arran.
Chief scientistJohn A Morrison (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 0691C cruise report cl6_91.pdf — access key 'C' (0.12 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificBallantrae and at South Arran
Track chartsFRV Clupea 0691C cruise track — trk3792.html FRV Clupea 0691C cruise track — trk3792b.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 6
CTD stationsQuantity: number of stations = 1
Chemical oceanography 
Other dissolved gasesDescription: sulphide
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)
Particulate organic matter (inc POC, PON)
Eggs and larvaeDescription: divers aqualung
Geology and geophysics 
GrabQuantity: number of samples = 853
Description: day grabs for herring eggs
Bottom photographyQuantity: number of deployments = 25
Description: rov tv