FRV Explorer 12/82

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier12/82
Cruise period1982-12-09 — 1982-12-21
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1. To carry out a survey of the stocks of spurdogs to the north and west of Scotland.
2. To tag spurdogs.
3. To collect adult sandeels (Ammodytes marinus) for fecundity studies.
4. Collection of pout (T.esmarkii) for fresh weight and length determinations from North and South Minches
5. The collection and delivery of 52 live Scyliorhinus caniculus for the Institute of Marine Biochemistry (N.E.R.C)

Adverse weather conditions forced ''Explorer'' to seek shelter on the 18/12/1982. The ship returned to Aberdeen on the 21/12/1982 as contiued gales prevented any further work. The sever weather conditions and heavy swell prevented any work in the close inshore areas of Fair Isle where it had been hoped to collect sandeels for fecundity estimations
Chief scientistJ A Gauld (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 12/82 cruise report explorer12_82.pdf (0.06 MB) 
Ocean/sea areas 
GeneralNorth Sea
Inner Seas off the West Coast of Scotland
North East Atlantic Ocean (limit 40W)
SpecificN. & W. Scotland, W and E of Orkney, North and South Minches, Fair Isle, N of Shetland, Scalloway Deeps, N.E of Skye, Cape Wrath
Track chartsFRV Explorer 12/82 cruise track — trk2874.html
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of samples = 2
Description: 1 water and 1 salinity sample at Cape Wrath for radio-ceasium analysis
Chemical oceanography 
RadioactivityQuantity: number of samples = 2
Description: 1 water and 1 salinity sample at Cape Wrath for radio-ceasium analysis
Biology and fisheries 
Demersal fishQuantity: number of hauls = 26
Description: distribution. 17 samples of Haddock and plaice were taken for parasitological studies
TaggingsQuantity: number of hauls = 26
Description: spurdogs tagged using two Howitt tags affixed by a T-headed attachment. 104 Scyliorhinus caniculus were tagged and released to the W of Orkney
Other biological/fisheries measurementQuantity: number of hauls = 26
Description: stomach content