RRS Discovery D44
Cruise summary report
|Ship name (ship code)||RRS Discovery (74E3)|
|Cruise period||1971-12-04 — 1971-12-13|
|Port of departure||Southampton, United Kingdom|
|Port of return||Barry, United Kingdom|
|Objectives||1. To recover two current meter moorings laid by 'Surveyor' in September.
2. To lay a near-bottom mooring in the 2000m depth near the position of mooring 104, with a single current meter in it, for recovery in May 1972.
3. To measure the signal strength at various ranges from a 5 kHz sound source, intended for use in long-range floats for the "Minimodo" experiment.
4. To test an acoustic release system suitable for use with recoverable neutrally buoyant floats.
5. To make STD and water sampling observations in relation to the current measurements from the moorings, and to test new STD sensors and improvements in processing STD data.
6. To measure ship flexure when pitching, by observing deflections of a laser beam running most of the length of the ship.
All the aims were successfully achieved.
|Chief scientist||John C Swallow (National Institute of Oceanography)|
|Cruise report||(0.46 MB)|
Irish Sea and St. George's Channel
North East Atlantic Ocean (limit 40W)
|Track charts||(0.02 MB)|
|Water bottle stations||Quantity: number of stations = 10|
|CTD stations||Quantity: number of stations = 9|
|Current meters||Description: 221d|
|Biology and fisheries|
|Occasional standard measurements|
|Other meteorological measurements||Description: sea and swell|