Cruise inventory

FRV Clupea 0486C

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier0486C
Cruise period1986-03-12 — 1986-03-27
Port of departureStornoway, United Kingdom
Port of returnGreenock, United Kingdom
Objectives1. To carry out echosounding and trawling surveys of the South Arran and Ballantrae Bank areas of the Clyde in an attempt to delimit spawning aggregations of herring.
2. To carry out a series of grab surveys on Ballantrae Bank to check for the presence of herring spawn.
3. To use reversing bottles and the CTD system to establish a temperature/salinity profile over Ballantrae Bank over the period of the survey.
4. To carry out a series of larval surveys on Ballantrae Bank to check for herring larvae and to use these to provide estimates of larval production.
5. To carry out biological sampling of trawl catches to establish the age and length compositions of the spring spawning stock of herring and to collect herring otoliths for stock separation studies.
Chief scientistJohn A Morrison (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 0486C cruise report cl4_86.pdf — access key 'C' (0.11 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificBallantrae Bank/ South Arran
Track chartsFRV Clupea 0486C cruise track — trk3585.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 12
CTD stationsQuantity: number of stations = 1
Biology and fisheries 
Eggs and larvae
Pelagic fishQuantity: number of hauls = 8
Description: trawls
Acoustic reflection on marine organisms.Description: whole cruise
Geology and geophysics 
GrabQuantity: number of samples = 138
Description: Day grabs