Cruise inventory

RV Ernest Holt 10/69

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Ernest Holt (74EH)
Cruise identifier10/69
Cruise period1969-11-04 — 1969-11-21
Port of departureGrimsby, United Kingdom
Port of returnGrimsby, United Kingdom
Objectives1. 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 scientistJohn W Ramster (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Ernest Holt 10/69 cruise report ernest_holt10_69.pdf — access key 'C' (0.27 MB) 
Ocean/sea areas 
GeneralEnglish Channel
Physical oceanography 
Surface measurements underway (T,S)Description: T only
Water bottle stationsQuantity: number of stations = 9
Description: 40 T surface
Current metersDescription: Dec every 10 min
Surface drifters/drifting buoysDescription: bottom
Other physical oceanographic measurementsDescription: moored ocean station
Chemical oceanography 
OxygenQuantity: 6
PhosphateQuantity: 44
SilicateQuantity: 44