Cruise inventory

FRV Explorer 2B/77

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier2B/77
Cruise period1977-03-15 — 1977-04-04
StatusCompleted
Port of departureStornoway, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeResearch
Objectives1) To asses the size and distribution of the spawning stock of blue whiting to the west of Scotland by means of an acoustic survey
2) To carry out pelagic trawling to identify echo traces and to provide samples for biological investigation
3) To measure the target strength of blue whiting in-situ
4) To provide information on blue whiting concentrations to fishing vessels

Survey began at 55 degrees 45 minutes North, 9 degrees 30 minutes West. The start of the survey was delayed until 17th March due to extreme weather conditions. A different survey pattern was adopted due to continuing poor weather. The survey was broken on 25/03/1977 in Stornoway to exchange personnel but continued on the 26/03/1977.
Chief scientistJohn Richards (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 2B/77 cruise report explorer2b_77.pdf — access key 'C' (0.08 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
North East Atlantic Ocean (limit 40W)
SpecificBroadbay, Stornoway, Rosemary Bank, Wyville Thomson ridge,
Measurements 
Biology and fisheries 
Pelagic fishQuantity: number of hauls = 3
Description: for blue whiting
Acoustic reflection on marine organisms.