Tridens
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | Tridens (64T0) |
| Cruise period | 1979-08-06 — 1979-08-17 |
| Status | Completed |
| Port of departure | Aberdeen, United Kingdom |
| Port of return | Aberdeen, United Kingdom |
| Purpose | Research |
| Objectives | To observe and measure a semi pelagic trawl for round fish, developed to work in areas with an undulating seabed (sand ridges).
To observe the behaviour of a 6 metre beam trawl giving special attention to the behaviour of flatfish in relation to the tickler chains. |
| Chief scientist | John Main (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
| Cruise report |  (0.05 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Measurements | |
| Biology and fisheries | |
| Gear research | Description: An examination of the semi pelagic trawl was made throughout the cruise. No. of hauls not noted. |
| Gear research | Quantity: number of images = 2 Description: 30 minute video films were made demonstrating the beam and trawl behaviour. |
| Gear research | Description: The beam trawl was surveyed on how it effected the behaviour of flatfish. No. of hauls not noted. |
| Geology and geophysics | |
| Bottom photography | Quantity: number of images = 2 Description: 30 minute video films were made demonstrating the beam and trawl behaviour. |
