RRS Discovery D157
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Discovery (74E3) |
| Cruise identifier | D157 |
| Cruise period | 1986-03-27 — 1986-04-09 |
| Status | Completed |
| Port of departure | Southampton, United Kingdom |
| Port of return | Falmouth, United Kingdom |
| Purpose | Research |
| Objectives | The 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 scientist | J Stuart M Rusby (Institute of Oceanographic Sciences Wormley Laboratory) |
| Cruise report |  (0.39 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | S.W. Approaches/ Tagus Abyssal Plain |
| Track charts |  |
| Measurements | |
| 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 meters | Description: Automatic listening station,recovered and deployed |
| Surface drifters/drifting buoys | Description: surface discus buoy,spar buoy.Autono.Recording Inverted Echo Sounder.11 deployed for current and turb.meas. |
| Biology and fisheries | |
| Gear research | Description: equipment trial of near bottom.1 sq.mtr.plankton sampler. |
| Meteorology | |
| Other meteorological measurements | Description: new meteorological sensors and mast,tested-evaluation trials only |
