FRV Mara 5B/67
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Mara (74MR) |
| Cruise identifier | 5B/67 |
| Cruise period | 1967-05-24 — 1967-06-23 |
| Status | Completed |
| Port of departure | Fort William, United Kingdom |
| Port of return | Buckie, United Kingdom |
| Purpose | Fisheries |
| Objectives | Loch Torridon acoustic experiments
The acoustic equipment was loaded at Fort William. Bottles of compressed air were collected in Kyle before going on to Loch Torridon to check the Admiralty moorings. The ship returned to Kyle harbour at weekends to replenish water and food supplies. The ''Maid'' was operated by ''Mara's'' crew who were responsible for catching the live fish used in the experiments. Temperature and salinity readings were taken using the NIO T/S bridge. A few samples were taken of plankton organisms which were thought to be causing volume reverberation and interfeering with the acoustic experiments. |
| Chief scientist | Colin J Chapman (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
| Cruise report |  (0.11 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland |
| Specific | Loch Torridon, Kyle |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Description: readings taken using a N.I.O. T/S bridge |
| Subsurface temperature and salinity measurements | Description: readings taken using a N.I.O. T/S bridge |
| Biology and fisheries | |
| Phytoplankton | Description: few plankton samples |
| Zooplankton | Description: few plankton samples |
| Gear research | Description: airgun used to investigate swim bladder resonance |
| Other biological/fisheries measurement | Description: live fish with intact swim bladders |
| Geology and geophysics | |
| Single-beam echosounding | Description: measurements made on saithe, haddock, whiting and pollack |
