FRV Clupea 7/69
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Clupea (74CU) |
| Cruise identifier | 7/69 |
| Cruise period | 1969-06-09 — 1969-06-28 |
| Status | Completed |
| Purpose | Trials |
| Objectives | This cruise had mainly technical objectives, the testing and development of acoustic equipment being blended with plankton and pelagic fish sampling. |
| Chief scientist | Robert E Craig (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 Torridon, north of Scotland. |
| Measurements | |
| Biology and fisheries | |
| Pelagic fish | Quantity: number of measurements = 2 Description: Midwater trawls producing a variety of fish, mainly whiting and haddock |
| Acoustic reflection on marine organisms. | Quantity: activity duration in days = 7 Description: During the first week the ship operated at Loch Torridon. Live pollack were placed in the special calibration rig to determine acoustic target strengths. Measurements were taken of the noise levels generated by 'Clupea' at various engine speeds and propeller pitch settings |
| Gear research | Quantity: activity duration in days = 7 Description: During the first week the ship operated at Loch Torridon. Measurements were taken of the noise levels generated by 'Clupea' at various engine speeds and propeller pitch settings |
