FRV Clupea 1079C
Cruise summary report
|Ship name (ship code)||FRV Clupea (74CU)|
|Cruise period||1979-07-30 — 1979-08-24|
|Port of departure||Aberdeen, United Kingdom|
|Port of return||Buckie, United Kingdom|
|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)|
Inner Seas off the West Coast of Scotland
|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