FRV Mara 7/73
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Mara (74MR) |
| Cruise identifier | 7/73 |
| Cruise period | 1973-07-02 — 1973-07-27 |
| Status | Completed |
| Port of departure | Buckie, United Kingdom |
| Port of return | Buckie, United Kingdom |
| Purpose | Trials |
| Objectives | 1. To develop techniques for the direct observation of trawl gears by the diving team and to co-ordinate these with results obtained by instrumentation.
2. An instrumented assessment of "All metal" cambered boards, polyvalent boards, V-boards and flat boards on two types of ground. 3. Observation of board action (stability in operation and flexibility to ground conditions), turbulence behind the boards and the track and volume of the mud cloud created by different board forms. 4. Observation by divers of the effect of the rig variations on a trawl net pin-pointing the areas of stress. 5. Observation of fish behaviour in the area of the sweeps and spreading wires. |
| Chief scientist | A Corrigall (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
| Cruise report |  (0.10 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Measurements | |
| Biology and fisheries | |
| Gear research | |
| Geology and geophysics | |
| Bottom photography | Description: 1500 feet of film and 600 still photographs shot underwater. |
