FRV Mara 7/78
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Mara (74MR) |
| Cruise identifier | 7/78 |
| Cruise period | 1978-07-03 — 1978-08-04 |
| Status | Completed |
| Port of departure | Buckie, United Kingdom |
| Port of return | Buckie, United Kingdom |
| Objectives | 1. To carry out an echosounder and midwater trawling survey for juvenile clupeids in the Clyde.
2. To carry out comparative fishing experiments with the Gourock midwater trawl and the new modified version of this trawl. 3. To carry out a routine water quality survey in Loch Linnhe. |
| Chief scientist | John A Morrison (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
| Project | J A Morrison |
| Cruise report |  (0.14 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Description: Water samples taken on each vertical profile for confirmation of oxygen and salinity |
| Surface measurements underway (T,S) | Description: Temperature, salinity and oxygen levels determined using telemetering probes |
| Chemical oceanography | |
| Oxygen | Description: Temperature, salinity and oxygen levels determined using telemetering probes |
| Oxygen | Description: Water samples taken on each vertical profile for confirmation of oxygen and salinity |
| Phosphate | Description: Water samples taken on each vertical profile for confirmation of oxygen and salinity |
| Nitrate | Description: Water samples taken on each vertical profile for confirmation of oxygen and salinity |
| Nitrite | Description: Water samples taken on each vertical profile for confirmation of oxygen and salinity |
| Silicate | Description: Water samples taken on each vertical profile for confirmation of oxygen and salinity |
| Biology and fisheries | |
| Demersal fish | |
| Acoustic reflection on marine organisms. |
