Cruise inventory

RRS Discovery D157

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD157
Cruise period1986-03-27 — 1986-04-09
Port of departureSouthampton, United Kingdom
Port of returnFalmouth, United Kingdom
ObjectivesThe purpose of the cruise was to test all scientific equipment and machinery on the recommissioning of the ship, and to carry out trials and deployments of a range of scientific gear. The latter included trials of new 1m2 nets to be towed a few metres off the sea floor in conjunction with a modified echo sounder fish, the hydrodynamic trials of a new 25m2 net system, and the deployment of four moored instruments near DB2 in the SW Approaches. In addition it was planned to carry out further hydrodynamic and scientific trials of the new catamaran supported thermistor spar and to begin the evaluation of new meteorlological sensors and mast for the more precise measurement of meteorlogical parameters at sea. If time allowed the automatic listening station (ALS) at 44 50'N, 15 4'W would be recovered and a replacement ALS deployed. During the cruise the third generation computer system was commissioned by RVS staff.
Chief scientistJ Stuart M Rusby (Institute of Oceanographic Sciences Wormley Laboratory)
Cruise reportRRS Discovery D157 cruise report d157.pdf — access key 'C' (0.39 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificS.W. Approaches/ Tagus Abyssal Plain
Track chartsRRS Discovery D157 cruise track — trk3176.html
Physical oceanography 
Surface measurements underway (T,S)Description: T only 5hrs.Spar fitted ,12 thermistors,2 indinometers,press.transducer,narrow beam sonar towed on catamaran
Current metersDescription: Automatic listening station,recovered and deployed
Surface drifters/drifting buoysDescription: surface discus buoy,spar buoy.Autono.Recording Inverted Echo Sounder.11 deployed for current and turb.meas.
Biology and fisheries 
Gear researchDescription: equipment trial of near bottom.1 sampler.
Other meteorological measurementsDescription: new meteorological sensors and mast,tested-evaluation trials only