Cruise inventory

FRV Clupea 7/69

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier7/69
Cruise period1969-06-09 — 1969-06-28
StatusCompleted
PurposeTrials
ObjectivesThis cruise had mainly technical objectives, the testing and development of acoustic equipment being blended with plankton and pelagic fish sampling.
Chief scientistRobert E Craig (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 7/69 cruise report cl7_69.pdf — access key 'C' (0.10 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificLoch Torridon, north of Scotland.
Measurements 
Biology and fisheries 
Pelagic fishQuantity: number of measurements = 2
Description: Midwater trawls producing a variety of fish, mainly whiting and haddock
Acoustic reflection on marine organisms.Quantity: activity duration in days = 7
Description: During the first week the ship operated at Loch Torridon. Live pollack were placed in the special calibration rig to determine acoustic target strengths. Measurements were taken of the noise levels generated by 'Clupea' at various engine speeds and propeller pitch settings
Gear researchQuantity: activity duration in days = 7
Description: During the first week the ship operated at Loch Torridon. Measurements were taken of the noise levels generated by 'Clupea' at various engine speeds and propeller pitch settings