RV Clione CLI11/81

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Clione (74CN)
Cruise identifierCLI11/81
Cruise period1981-09-03 — 1981-09-20
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To investigate the orientation and behaviour of plaice in relation to bottom topography and near-bed currents using:-
(a) sector scanning sonar and transponding acoustic compass tags.
(b) sector scanning sonar, transponding acoustic tags and divers equipped with a 300 kHz hand held acoustic torch.
(c) direct observation and photography of small plaice confined on the seabed in a cage spanning several small sand ridges.
2. To retrieve spat collecting bags from a marked site in Start Bay and relay scallop spat in Salcombe estuary.
Chief scientistGeoffrey P Arnold (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Clione CLI11/81 cruise report clione11_81.pdf (0.15 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificStart Bay
Track chartsRV Clione CLI11/81 cruise track — trk2663.html
Physical oceanography 
Current metersQuantity: number of deployments = 2
Description: 13 hours
Biology and fisheries 
Other biological/fisheries measurementDescription: behaviour
Geology and geophysics 
Bottom photographyDescription: Underwater TV used to observe isolated fish in the cage.