Cruise inventory

FRV Mara 9/65

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Mara (74MR)
Cruise identifier9/65
Cruise period1965-11-08 — 1965-11-20
Port of departureBuckie, United Kingdom
Port of returnBuckie, United Kingdom
Objectives1) Haddock were caught on handlines and fished from ''Mara'' and/or small boat
2) Haddock were held at the surface for certain periods before they were taken down in polythene bags by diver and put into a bottom cage
3) Attempts were made to listen to this fish from the anchored ship, and a 24 hour monitoring cycle was established
4) An analysis was made of the survial of the haddock that had undergone the pressure change

Bottom cages were put down by ''Mara'' on the 11/11/1965 and 12/11/1965 in 80 feet of water
Chief scientistColin J Chapman (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Mara 9/65 cruise report mara9_65.pdf — access key 'C' (0.10 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
SpecificLoch Ainort, Skye
Biology and fisheries 
Demersal fishQuantity: activity duration in days = 2
Description: Bottom cages were put down in 80 feet of water.
Demersal fishQuantity: number of experiments = 1
Description: Tests were carried out to see if the rapid ascent and then decent back to the cages caused the mortality rate among the haddock.
Demersal fishQuantity: activity duration in days = 1
Description: A 24 hour recording of haddock noises was sucessfully obtained after several attempts.
Demersal fishQuantity: activity duration in days = 7
Description: 40 haddock were caught on handlines, held at the surface for periods of 1-4 hours then placed in the bottom cages.