Cruise inventory

FRV Mara 2/63

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Mara (74MR)
Cruise identifier2/63
Cruise period1963-01-28 — 1963-02-22
Port of departureFraserburgh, United Kingdom
Port of returnFraserburgh, United Kingdom
Objectives1) Tagging and release of crabs
2) The relative efficacies of 4 creel baits were tested
3) A comparison was made between Scottish creels with 5 in shuttered eyes and commercial collapsible potts. Both types of gear were baitted with skate offal

''Mara'' was based in Fraserburgh for the entire cruise
Chief scientistJames Mason (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Mara 2/63 cruise report mara2_63.pdf — access key 'C' (0.04 MB) 
Ocean/sea areas 
GeneralNorth Sea
Biology and fisheries 
CrustaceansQuantity: number of specimens = 268
Description: Crabs caught. These and those that were bought were tagged and released at 9 stations on the crab grounds off Fraserburgh
CrustaceansQuantity: number of deployments = 148
Description: Creels baited with either skate offal, whiting, fish meal or crab meal to test effectiveness of baits.
TaggingsQuantity: number of specimens = 670
Description: Crabs of commerical size caught and bought had tags attached to their claws and were released at 9 stations on the crab grounds off Fraserburgh. 36 undersized crabs were tagged by the Gundersen method