FRV Clupea 11/71

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier11/71
Cruise period1971-11-18 — 1971-11-29
Port of departureCampbeltown, United Kingdom
Port of returnUnknown, United Kingdom
Objectives1. To survey the distribution and abundance of 0-group herring in the Clyde.
2. To do environmental and fish sampling for pollution investigations.
3. To investigate the optimum combination of engine revs and propeller pitch for towing trawls.
Chief scientistMartin Walsh (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 11/71 cruise report cl11_71.pdf (0.10 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificFirth of Clyde
Physical oceanography 
Water bottle stationsQuantity: number of stations = 33
Description: 27 surface only
Chemical oceanography 
PhosphateQuantity: number of stations = 33
NitrateQuantity: number of stations = 33
AmmoniaQuantity: number of stations = 14
Other contaminant measurementsQuantity: number of stations = 6
Description: chemical pollution
Biology and fisheries 
Pelagic fishQuantity: number of hauls = 25
Demersal fishQuantity: number of hauls = 25