Cruise inventory

FRV Mara 8/75

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Mara (74MR)
Cruise identifier8/75
Cruise period1975-07-28 — 1975-08-08
StatusCompleted
Port of departureBuckie, United Kingdom
Port of returnBuckie, United Kingdom
PurposeResearch
Objectives1) To measure the net drag differentials of four panel trawls of varying mouth openings and constructed with twines of differing thickness
2) To test the diver's distance measuring instrument
3) The reactions of small haddock and roundfish to the approaching trawl were observed
Chief scientistA Corrigall (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Mara 8/75 cruise report mara8_75.pdf — access key 'C' (0.06 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificLossiemouth
Measurements 
Biology and fisheries 
Gear researchQuantity: activity duration in days = 9
Description: To measure the net drag differentials of four panel trawls of varying mouth openings and twine thicknesses.
Gear researchQuantity: number of experiments = 1
Description: The diver's new distance measuring instrument was also tested, but proved to be incompatible with the rest of the unit, so was returned for modification.
Gear researchQuantity: number of experiments = 1
Description: In the trials it was noted that the trawl herding of the fish was seen to work 'with' and 'against' the tide, but success was far lower on cross tides. No. of trials not specified.