FRV Explorer 5B/67

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier5B/67
Cruise period1967-06-12 — 1967-07-04
Port of departureGreenock, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1) Hydrographic sampling for temperatures, salinities and phosphates were taken at all standard depths from 0-200 m.
2) Underwater camera was fitted to the headline of the trawl whenever conditions were suitable. It was also used to identify the organisms producing a midwater trace off the southern edge of Rockall.
3) The Marconi Seagraph for most of the echosounding survey, some records were obtained with the expanded scale recorder
4) The ship returned to Rocksll to complete the programme of plankton sampling and to carry out a fishing survey

''Explorer'' put into Stornoway on the 26/06/1967 to land a sick member of crew and replenish freshwater supplies leaving on the 27/06/1967. Catches included blue whiting, haddock, coalfish, ling, rays, 1 basking shark, herring and mackerel.
Chief scientistIan G Baxter (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 5B/67 cruise report explorer5_67.pdf (0.25 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificNW of Ireland, NW of St. Kilda
Physical oceanography 
Surface measurements underway (T,S)Description: lines of hydrographic stations
Subsurface temperature and salinity measurementsDescription: lines of hydrographic stations
Chemical oceanography 
PhosphateDescription: lines of hydrographic stations
Biology and fisheries 
Eggs and larvaeDescription: oblique haul at each station and some Gulf III, blue whiting larvae
ZoobenthosQuantity: number of stations = 2
Description: trawling areas: coral
Pelagic fishQuantity: number of stations = 2
Description: trawling areas: blue whiting, silver smolt, haddock,herring, mackerel, ling, 1 basking shark and coalfish
Demersal fishQuantity: number of stations = 2
Description: trawling areas: rabbitfish, rays, cod and Gadiculus
Geology and geophysics 
Bottom photographyQuantity: number of images = 20
Description: film records using underwater camera fitted to trawl headline
Single-beam echosoundingDescription: survey