Cruise inventory

FRV Clupea 7/68

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier7/68
Cruise period1968-07-01 — 1968-07-20
StatusCompleted
Port of departureBuckie, United Kingdom
Port of returnBuckie, United Kingdom
PurposeFisheries
Objectives1. To carry out an echo-sounding survey off south-east Shetlands in order to estimate the abundance and distribution of herring shoals.
2. To obtain plankton samples from the same area for the Scottish Marine Biological Association at Edinburgh.
Chief scientistJohn A Urquhart (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 7/68 cruise report cl7_68.pdf — access key 'C' (0.05 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificShetlands
Measurements 
Biology and fisheries 
SestonQuantity: activity duration in days = 14
Description: During the echo search, plankton samples were taken with a plankton indicator every hour from 6pm (B.S.T) to 6am (B.S.T)
Pelagic fishQuantity: activity duration in days = 14
Description: An echo search plan was carried out in the second and thrid week
Acoustic reflection on marine organisms.Quantity: activity duration in days = 14
Description: An echo search plan was carried out in the second and thrid week