FRV Explorer 9/83

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier9/83
Cruise period1983-09-09 — 1983-09-28
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1. To carry out a herring larval survey in the Orkney-Shetland area as part of the ICES Herring Larval Surveys.
2. To collect sea water samples at Fair Isle (59° 30'N 02° 00'W) as part of the Lowestoft programme of quantifying seawater contamination by radio caesium.
3. To collect, measure and preserve in liquid nitrogen, freshly caught, recently hatched herring larvae as part of a project investigating the genetic composition of larvae from various spawning grounds in the North Sea and West Coast.
4. To pick out and tube fish larvae from as many plankton samples as possible during the cruise.
5. All plankton samples were examined for herring larvae

Sampling was interrupted on severeal occasions due to bad weather. Gale force winds forced ''Explorer'' to shelter in Inganess Bay on the 18/09/1983. A stop was made at Kirkwell from the 19/09/1983 until the 20/09/1983
Chief scientistPaul W Rankine (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
ProjectICES Herring Larval Survey
Coordinating bodyICES
Cruise reportFRV Explorer 9/83 cruise report explorer9_83.pdf (0.31 MB) 
Ocean/sea areas 
GeneralNorth Sea
North East Atlantic Ocean (limit 40W)
SpecificOrkney-Shetland, Fair Isle and North Sea, NE of Fraserburgh, Foula area
Track chartsFRV Explorer 9/83 cruise track — trk2988.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 1
Description: S surface only
Other dissolved substancesQuantity: number of samples = 1
Description: Radio-caesium (Cs-137)- Lowestoft programme
Biology and fisheries 
Eggs and larvaeQuantity: 204
Description: 112 herring larvae were collected for genetic analysis. 13935 clupeid larve were picked out during the cruise