RRS Challenger CH10A/75
Cruise summary report
|Ship name (ship code)||RRS Challenger (74CH)|
|Cruise period||1975-07-04 — 1975-07-10|
|Port of departure||Dunstaffnage, United Kingdom|
|Port of return||Ardrossan, United Kingdom|
|Objectives||The objectives of this cruise were:
(1) Deploying a current meter mooring at 57N, 9W. Accomplished, but status not checked at the end of the cruise due to time lost through Challenger assisting a trawler in distress.
(2) Work the Rockall via Anton Dohrn Seamount (Ellett Line) and Rockall-Malin Head hydrographic sections. Accomplished.
(3) Net tows to collect crab larvae for Liverpool University Port Erin Laboratory. Tows successfully undertaken but crab larvae were not found.
(4) Collection of shelf sediment Shipek Grab samples for Aberystwyth University. Accomplished.
(5) Collection of large-volume water samples for radio-caesium measurements. Accomplished
(6) Near real-time supply of temperature profiles to the Met Office. Accomplished.
|Chief scientist||David J Ellett (Scottish Marine Biological Association)|
|Cruise report||(0.08 MB)|
|General||Inner Seas off the West Coast of Scotland|
North East Atlantic Ocean (limit 40W)
|Specific||Rockall Bank, Malin Shelf|
|CTD stations||Quantity: number of stations = 29|
|Radioactivity||Quantity: number of samples = 10|
Description: Large-volume samples for radio-caesium determination.
|Biology and fisheries|
|Zooplankton||Quantity: number of hauls = 23|
Description: Oblique and vertical 50cm plankton net tows
|Geology and geophysics|
|Grab||Quantity: number of deployments = 7|
Description: Shipek grab samples
|Moorings, landers, buoys|
|Current meters||57° 0' 0" N 9° 0' 0" W — Current meter mooring deployed|