RRS Discovery D87
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Discovery (74E3) |
| Cruise identifier | D87 |
| Cruise period | 1977-10-08 — 1977-10-19 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Gibraltar, Gibraltar |
| Purpose | Trials |
| Objectives | The main objectives of the cruise were to carry out instrumented towing trials of the rectangular mid-water 1m2 and 8m2 trawl nets (RMT 1+8), to test a prototype pop-up bottom seismometer (PUBS Mk. II) and to experiment with the deployment and simultaneous operation of two airguns and a towed array. Consequently cruise planning proceeded mainly on a day to day basis, as demanded by the various tests required and except for a call at Lisbon, the ship's track was chosen to minimise steaming within the area of operation for which permission to work had been applied for. |
| Chief scientist | Robert B Whitmarsh (Institute of Oceanographic Sciences Wormley Laboratory) |
| Project | Instrument Testing West of Portugal |
| Cruise report |  (5.17 MB) |
| Ocean/sea areas | |
| General | Bay of Biscay North East Atlantic Ocean (limit 40W) Strait of Gibraltar (Mediterranean Sea) |
| Track charts |  |
| Measurements | |
| Meteorology | |
| Routine standard measurements | Quantity: activity duration in days = 11 Description: continuous 2-minute averages |
| Geology and geophysics | |
| Multi-beam echosounding | Quantity: track kilometres = 2943 |
