RRS Challenger CH20
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | CH20 |
| Cruise period | 1987-10-17 — 1987-11-03 |
| Status | Completed |
| Port of departure | Troon, United Kingdom |
| Port of return | Barry, United Kingdom |
| Purpose | Research |
| Objectives | 1. To sample the bottom-living fishes of the Rockall Trough at depths from 250 to 3000m with a semi-balloon trawl.
2. To continue the benthic time-series at the SMBA permanent stations in the Rockall Trough using an epibenthic sledge, Agassiz trawl and box corer. 3. To sample the megabenthos of the Hebridean Terrace using an Agassiz trawl for reproductive, nutritional and genetic studies. 4. If time permitted to sample the Feni Ridge with an Agassiz trawl. |
| Chief scientist | John D M Gordon (Scottish Marine Biological Association) |
| Cruise report |  (0.33 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | Rockall Trough/ Porcupine Sea Bight |
| Track charts | (0.04 MB) |
| Measurements | |
| Biology and fisheries | |
| Zoobenthos | Quantity: number of samples = 31 Description: survey:distribution,population studies |
| Demersal fish | Quantity: number of hauls = 24 |
| Gear research | Quantity: number of hauls = 31 |
| Exploratory fishing | Quantity: number of hauls = 31 |
| Other biological/fisheries measurement | Quantity: number of hauls = 24 Description: non commercial fish |
| Geology and geophysics | |
| Core - soft bottom | Quantity: number of cores = 3 |
