Cruise inventory

FRV Explorer 6/72

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier6/72
Cruise period1972-07-14 — 1972-08-10
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeResearch
Objectives1) To survey the abundance and distribution of 0-group gadoids in mid-water between latitudes 57 degrees and 61 degrees North, and 03 degrees West and 04 degrees East.
2) To undertake trials of the Aberdeen fish counting equiptment
3) To take routine samples of the organic and inorganic environments
4) Deep frozen samples of fish and medusae were obtained for the determination of weight-length relationships

On the 28/07/1972 a call was made at Lerwick till the 29/07/1972 for water and mail. A brief stop was made at Invergordon from the 03/08/1972 to disembark a fishing mate who was later collected at Peterhead on the 05/08/1972 with another crew member and a sick crew member was put ashore
Chief scientistJohn R G Hislop (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 6/72 cruise report explorer6_72.pdf — access key 'C' (0.12 MB) 
Ocean/sea areas 
GeneralNorth Sea
Norwegian Sea
SpecificW of Shetlands, Fair Isle, Fladen ground, Devil's Hole, Bressay Shoal
Measurements 
Physical oceanography 
BathythermographQuantity: number of profiles = 51
Description: mechanical
Water bottle stationsQuantity: number of stations = 51
Chemical oceanography 
PhosphateQuantity: 51
NitrateQuantity: 51
SilicateQuantity: 51
Contamination 
Other contaminant measurementsQuantity: 24
Description: chemical pollution
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: 51
PhytoplanktonQuantity: number of samples = 19
Description: plankton samples obtained with the THM net. They were deep frozen for determination of the heavy metal content
ZooplanktonQuantity: 56
Birds
Mammals and reptiles
Pelagic fishQuantity: number of hauls = 110
Description: Made with the Aberdeen young fish pelagic trawl at depths between 10-30 fathoms. Haddock, cod, whiting, Norway pout, saithe, blue whiting, sandeels and dogfish caught. Approximately 100 young gadoids were brought back alive for aquarium experiments
Demersal fishQuantity: number of hauls = 110
Description: Made with the Aberdeen young fish pelagic trawl at depths between 10-30 fathoms. Haddock, cod, whiting, Norway pout, saithe, blue whiting, sandeels and dogfish caught. Approximately 100 young gadoids were brought back alive for aquarium experiments
Gear researchQuantity: number of hauls = 112