RRS Discovery D116

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD116
Cruise period1981-01-06 — 1981-01-16
Port of departureBarry, United Kingdom
Port of returnFunchal, Portugal
Objectives1. To test the new midships winch with its hydraulic main supply, to tension the 10mm cable on it to greater than 5000m and to operate the winch in realistic conditions.
2. To tension the 6mm conducting cable on the electric winch to 5000m
3. To run main trawl winch under tension and assess its serviceability.
4. To run sonars at different frequencies over the continental shelf.
5. To run long CTD sections, from near surface to 300m using the Batfish depth cycling mode, from 47N to approximately 36N.
6. To take wave recordings using a spar buoy in breaking wave conditions.
7. To test a wide variety of instrumentation at various stages of their development under realistic conditions of weather, depth and sea.
Chief scientistBrian S McCartney (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D116 cruise report d116.pdf (0.59 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
North East Atlantic Ocean (limit 40W)
SpecificN.E. Atlantic
Track chartsRRS Discovery D116 cruise track — trk2534.html
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 1481.6
Water bottle stationsDescription: numerous independent discrete measurements made surface only
Subsurface temperature and salinity measurementsQuantity: track kilometres = 1481.6
Description: batfish CTD
Biology and fisheries 
Gear researchDescription: trialing of winches under tension.
Routine standard measurements
Other meteorological measurementsDescription: sea and swell
Geology and geophysics 
Bottom photographyQuantity: number of deployments = 2
Long/short range side scan sonarQuantity: track kilometres = 555.6
Other geological/geophysical measurementsQuantity: number of deployments = 2
Description: pore water sampler