RRS Challenger CH9/84
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | CH9/84 |
| Cruise period | 1984-10-29 — 1984-11-13 |
| Status | Completed |
| Port of departure | Ardrossan, United Kingdom |
| Port of return | Ardrossan, United Kingdom |
| Purpose | Research |
| Objectives | 1. To sample the fish populations of the Rockall Trough using the Granton trawl and the semi-balloon otter trawl.
2. To sample the fish populations of the Porcupine Sea Bight using the Granton trawl and the semi-balloon otter trawl. 3. To carry out near-bottom sampling with the RMT 8. 4. To experiment with lights attached to bottom trawls. 5. To experiment with midwater trawls. 6. To collect material for Institutes and Universities. |
| Chief scientist | John D M Gordon (Scottish Marine Biological Association) |
| Cruise report |  (0.42 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | Rockall Trough/ Porcupine Bight |
| Track charts |  |
| Measurements | |
| Biology and fisheries | |
| Zooplankton | Quantity: number of hauls = 7 |
| Eggs and larvae | Quantity: number of hauls = 7 |
| Zoobenthos | Quantity: number of hauls = 15 |
| Pelagic fish | Quantity: number of hauls = 12 Description: survey:taxonomy,distribution,biomass determination,energy transfers |
| Demersal fish | Quantity: number of hauls = 14 Description: survey:taxonomy,distribution,biomass determination,energy transfers |
| Gear research | Quantity: number of hauls = 8 Description: the effect of artificial light on trawls. |
| Exploratory fishing | Quantity: number of hauls = 26 |
