Cruise inventory

RV Clione CLI11B/87

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Clione (74CN)
Cruise identifierCLI11B/87
Cruise period1987-08-25 — 1987-09-07
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
Objectives1. To carry out an acoustic survey for spawning herring concentrations off the north east coast of England, concentrating on the Yorkshire coast grounds. This will involve the use of a towed body fitted with a 38 kHz transducer, and Simrad echo-integration equipment.
2. To obtain biological samples of herring using a pelagic trawl for age, maturity and fecundity studies.
3. To collect samples of spawning herring for lipid studies, involving preservation of eyes and portions of ovaries (University of Bergen).
4. To follow through the aggregation, spawning and dispersal phases of individual spawning concentrations using acoustic methods supplemented by underwater TV/camera sled observations. CTD observations will also be made on the spawning grounds.
Chief scientistP O Johnson (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Clione CLI11B/87 cruise report clione11b_87.pdf — access key 'C' (0.10 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificW. Central N. Sea
Track chartsRV Clione CLI11B/87 cruise track — trk3390.html
Measurements 
Physical oceanography 
Water bottle stationsDescription: A limited number of temperature and salinity observations were made with the CTD unit and water bottle sampler on spawning sites.
CTD stationsDescription: A limited number of temperature and salinity observations were made with the CTD unit and water bottle sampler on spawning sites.
Other physical oceanographic measurementsQuantity: track kilometres = 2529.832
Description: acoustic stations
Biology and fisheries 
Pelagic fishQuantity: number of hauls = 13
Description: Engel pelagic trawl hauls made for herring.
Acoustic reflection on marine organisms.Quantity: track kilometres = 2529.832
Description: acoustically integrated using the Simrad QMII and QD systems