FRV Mara 9/65
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Mara (74MR) |
| Cruise identifier | 9/65 |
| Cruise period | 1965-11-08 — 1965-11-20 |
| Status | Completed |
| Port of departure | Buckie, United Kingdom |
| Port of return | Buckie, United Kingdom |
| Purpose | Research |
| Objectives | 1) Haddock were caught on handlines and fished from ''Mara'' and/or small boat
2) Haddock were held at the surface for certain periods before they were taken down in polythene bags by diver and put into a bottom cage 3) Attempts were made to listen to this fish from the anchored ship, and a 24 hour monitoring cycle was established 4) An analysis was made of the survial of the haddock that had undergone the pressure change Bottom cages were put down by ''Mara'' on the 11/11/1965 and 12/11/1965 in 80 feet of water |
| Chief scientist | Colin J Chapman (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
| Cruise report |  (0.10 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland |
| Specific | Loch Ainort, Skye |
| Measurements | |
| Biology and fisheries | |
| Demersal fish | Quantity: activity duration in days = 2 Description: Bottom cages were put down in 80 feet of water. |
| Demersal fish | Quantity: number of experiments = 1 Description: Tests were carried out to see if the rapid ascent and then decent back to the cages caused the mortality rate among the haddock. |
| Demersal fish | Quantity: activity duration in days = 1 Description: A 24 hour recording of haddock noises was sucessfully obtained after several attempts. |
| Demersal fish | Quantity: activity duration in days = 7 Description: 40 haddock were caught on handlines, held at the surface for periods of 1-4 hours then placed in the bottom cages. |
