RV Ernest Holt 10/69
Cruise summary report
|Ship name (ship code)||RV Ernest Holt (74EH)|
|Cruise period||1969-11-04 — 1969-11-21|
|Port of departure||Grimsby, United Kingdom|
|Port of return||Grimsby, United Kingdom|
|Objectives||1. To lay 11 moored current-meter stations in a network covering the western
Irish Sea, and towards the end of the cruise recover, change the films and relay the four stations at which German meters will be used.
2. To release 50 sea-surface and seabed drifters at each moored station.
3. To do hydrographic sections at the beginning and end of the cruise across the North Channel and between the coast of Ireland and Anglesey.
4. To rendezvous with one of Manchester Corporation's sludge carriers, observe the discharge, anchor in it and take detailed current measurements and water samples for chemical and mechanical analysis over the next 12.5 hours.
5. To supplement earlier nutrient surveys in the eastern Irish Sea by sampling along a grid covering the area west of the Isle of Man.
6. To release parachute drogues near one of the moored stations and track them for as long as possible.
7. To test the Bissett-Borman TSD system in the Rockall channel.
8. To collect surface water samples for the Radiobiological Section.
9. To bring back to Lowestoft some deep-frozen Kilkeel herring for Mr. Burd.
|Chief scientist||John W Ramster (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)|
|Cruise report||(0.27 MB)|
|Surface measurements underway (T,S)||Description: T only|
|Water bottle stations||Quantity: number of stations = 9|
Description: 40 T surface
|Current meters||Description: Dec every 10 min|
|Surface drifters/drifting buoys||Description: bottom|
|Other physical oceanographic measurements||Description: moored ocean station|