Cruise inventory

FRV Explorer 9A/68

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier9A/68
Cruise period1968-10-30 — 1968-11-05
StatusCompleted
Port of returnLeith, United Kingdom
PurposeResearch
ObjectivesFish capture experiments and tagging experiments using detachable codends

Fishing had to be discontinued on the 31/10/1968 due to the onset of bad weather and a leak had developed in the boiler tubes making further work impossible.
Chief scientistRichard B Burns (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory), Rodney Jones (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 9A/68 cruise report explorer9_68.pdf — access key 'C' (0.23 MB) 
Ocean/sea areas 
GeneralNorth Atlantic Ocean
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of stations = 24
Description: T surface only (data for both parts of the cruise)
Chemical oceanography 
Oxygen
Phosphate
Nitrate
Silicate
Biology and fisheries 
PhytoplanktonQuantity: number of stations = 24
Description: (data for both parts of the cruise)
Demersal fishDescription: 1 hour trawls made with the 48 ft Granton trawl of courlene, with rubber bobbins, and a small mesh cover. Haddock, whiting, cod, hake, ling, saithe and T. esmarkii were the principal species recorded. Dogfish were present in small numbers in all hauls. (data for both parts of the cruise)
TaggingsQuantity: number of specimens = 9
Description: Taggings of cod from one catch inside the upper Minch. (data for both parts of the cruise)
Exploratory fishingDescription: 1 hour trawls made with the 48 ft Granton trawl of courlene, with rubber bobbins, and a small mesh cover. Haddock, whiting, cod, hake, ling, saithe and T. esmarkii were the principal species recorded. Dogfish were present in small numbers in all hauls. (data for both parts of the cruise)