RV Ernest Holt 3/69
Cruise summary report
|Ship name (ship code)||RV Ernest Holt (74EH)|
|Cruise period||1969-03-04 — 1969-03-10|
|Port of departure||Grimsby, United Kingdom|
|Port of return||Grimsby, United Kingdom|
|Objectives||1. To use the acoustic arch fitted along the headline of a bottom trawl in
the North Sea.
2. If time permits to carry out shooting and hauling trials with the Engel trawl, using various rigs of backstrops, pennants and bridles.
3. As dictated by progress and conditions a nurlber of suitable live flatfish of various species will be collected from Flamborough Off Grounds for Dr. Purdom.
|Chief scientist||J G Cattley (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)|
|Cruise report||(0.13 MB)|
|Instrumented wave measurements||Description: observations|
|Biology and fisheries|
|Demersal fish||Description: plaice, lemon sole and dabs collected|
|Gear research||Quantity: activity duration in days = 7|
Description: acoustic arch research
|Gear research||Description: trials with Engel trawl using backstrops, G-links and recessed links|
|Routine standard measurements||Description: synotptic hourly measurements|