Cruise inventory

FRV Explorer 2/79

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier2/79
Cruise period1979-02-19 — 1979-03-08
Port of departureLeith, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1) To take part in the International Young Herring and Gadoid Pre-recruit Survey in the North Sea.
2) To determine the age composition of cod, haddock, saithe and whiting for each block of squares
3) To comission the new computer system
4) To obtain echo sounder records while crossing selcetd sections of pipeline routes

23/02/1979 - 27/02/1979 mid-cruise break at Leith
Chief scientistArthur S Jermyn (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Coordinating bodyICES
Cruise reportFRV Explorer 2/79 cruise report explorer2_79.pdf — access key 'C' (3.83 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificDanish and German coast, Dogger Bank, Heligoland, south of Fladen Ground, Moray Firth, Buchan
Track chartsFRV Explorer 2/79 cruise track — explorer2_79track.pdf (3.65 MB) 
Physical oceanography 
Water bottle stationsQuantity: number of stations = 31
Description: top & bottom temperatures and salinities
Chemical oceanography 
PhosphateQuantity: 2
NitrateQuantity: 2
AmmoniaQuantity: 2
SilicateQuantity: 2
Trace metalsQuantity: 1
Bottom depositsQuantity: 1
Contaminants in organismsQuantity: number of hauls = 1
Description: Using a French trawl with a 20mm codend in the inner Moray Firth on the dumping ground for the British Aluminium smelter sludge. Samples of selected tissues of all species and various benthic animals were taken for later analysis and examination
Biology and fisheries 
NektonQuantity: 4
Pelagic fishQuantity: number of hauls = 27
Description: population,biomass determination,distribution
Demersal fishQuantity: number of hauls = 27