Cruise inventory

RV Corella 10/69

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corella (74CX)
Cruise identifier10/69
Cruise period1969-05-30 — 1969-06-09
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeTrials
Objectives1. Vertical distribution studies using the Lowestoft multiple plankton
sampler fitted with a changing net mechanism and a sledge sampler
for collections near the bottom.
2. Further tests mith the Boothbay net.
3. Gear trials with the Lowestoft Multiple Plankton Sampler:
(a) Cover tests
(b) Filtration tests with a new net design.
4. Trials with a Longhurst-Hardy sampler fitted as a codend to the
Lowestoft Multiple Plankton Sampler.
5. Comparative fishing tests with a 20" Lowestoft Plankton Sampler and
the German uncased 'Hai' sampler.

Tests for the 'clogging' and 'escape' were carried out with the standard 30'' T.T.N as the electronic unit on the changing net sampler failed. The Boothbay Net caught numerous fish larvae near the bottom, late stage cod and plaice larvae were particularly abundant in these samples. Live Calanus was collected.
Chief scientistDerek Harding (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Corella 10/69 cruise report corella10_69.pdf — access key 'C' (0.13 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificYarmouth Roads, Ijmuiden
Measurements 
Biology and fisheries 
Eggs and larvaeQuantity: activity duration in hours = 4
Description: 20 samples were made to determine the vertical stratification of planktonic fish larvae