FRV Clupea 1079C
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Clupea (74CU) |
| Cruise identifier | 1079C |
| Cruise period | 1979-07-30 — 1979-08-24 |
| Status | Completed |
| Port of departure | Aberdeen, United Kingdom |
| Port of return | Buckie, United Kingdom |
| Purpose | Trials |
| Objectives | 1. To obtain instrumented measurements of scallop dredge fore and aft inclinations for a range of warp length/depth ratios and towing speeds.
2. To compare the catching performance of two modified dredges and a standard dredge. 3. To obtain underwater TV recordings of the dredges in operation. |
| Chief scientist | Edward S Strange (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
| Cruise report |  (0.18 MB) |
| Ocean/sea areas | |
| General | North Sea Inner Seas off the West Coast of Scotland |
| Measurements | |
| Biology and fisheries | |
| Molluscs | Quantity: number of specimens = 806 Description: Scallops caught during dredge hauls with the modified and standard dredges fished together as a 3-dredge array. 381 scallops and 62 baskets of stones/rubbish caught with the standard dredge, 248 scallops and 38 baskets of stones/rubbish caught with the modified dredge (b) and 177 scallops and 11 baskets of stones/rubbish caught with the modified dredge |
| Gear research | Quantity: number of hauls = 8 Description: Instrumented dredge hauls using three and four standard dredge arrays. Measurements of dredge fore and aft inclinations for a range of towing speeds, depths and warp lengths were obtained. |
| Gear research | Quantity: number of hauls = 45 Description: Dredge hauls with the modified and standard dredges fished together as a 3-dredge array. |
| Geology and geophysics | |
| Bottom photography | Quantity: number of hauls = 8 Description: Observation dredge hauls using underwater TV. 7 tapes of underwater gear observations were obtained |
