RV Corella 7/67
Cruise summary report
|Ship name (ship code)||RV Corella (74CX)|
|Cruise period||1967-10-20 — 1967-11-01|
|Port of departure||Lowestoft, United Kingdom|
|Port of return||Lowestoft, United Kingdom|
|Objectives||1. To carry out trials of the high power 100 kHz echo sounder,
together with measurements of target strengths.
2. Trials of the modified acoustic arch system on ground and midwater trawls.
A number of records were taken of target strength from single fish. Underwater television was used at night to look at the loch bed and the fish in Loch Torridon. Pictures were taken of the bottom. Excellent results were obtained from the acoustic arch units. Tests of the 100 kHz equipment were made
|Chief scientist||Ronald B Mitson (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)|
|Cruise report||(0.16 MB)|
Inner Seas off the West Coast of Scotland
|Specific||Loch Torridon, Stornoway, Moray Firth, Farne Deeps|
|Biology and fisheries|
|Pelagic fish||Quantity: number of hauls = 2|
Description: 4 baskets of blue whiting were caught on 2 tows of the trawl in Stornoway. 1 shot of the trawl caught 20 baskets of blue whiting
|Gear research||Quantity: number of hauls = 5|
Description: 1 trawl haul shot to obtain fish for echo targets,1 shot in 65 fathoms with no units fitted and again with the acoustic arch units mounted.