Cruise inventory

RV Clione CLI4/68

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Clione (74CN)
Cruise identifierCLI4/68
Cruise period1968-03-19 — 1968-03-29
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To continue the seasonal trawl survey of adult plaice in the southern North Sea, particularly in the following areas:
A) Tail End of Dogger - Clay Deep - Lower Scruff (J9, J10).
B) Outer Silver Pit - Markham's Hole - Botney Gut (G7, J6).
C) Brown Ridges - Knoll Deep (G4 and H4)
2. To supplement plaice larval survey No. 6 (CORELLA 5/1968) by working a line of Tin Tow Net (TTN) stations through the northern larval patch between the Lower Scruff and Turbot Bank.
3. To collect and preserve small plaice for predation studies (Mr Harding).

Consistent quantities of plaice and other prime flatfish were taken on all grounds by the gear used (short bridles and heavy chains). Some group II fish were taken. Live plaice, dabs and sole were carried in the deck tanks and fish-hold
Chief scientistR Colin A Bannister (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Clione CLI4/68 cruise report clione4_68.pdf — access key 'C' (0.14 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificBrown Ridges, Texel, south of the Monkey Bank, Clay Deeps, Cleaver Bank, Botney Gut, Silver Pit, Flamborough Off areas, Haddock Bank, Swarte Bank, and Brown Bank
Biology and fisheries 
SestonQuantity: number of stations = 10
Description: (TTN) Plankton stations
Demersal fishQuantity: number of samples = 1000
Description: Otoliths from plaice for length distributions and age-length keys for each area
Demersal fishQuantity: number of hauls = 8
Description: 2-hour duration, part of the trawl survey. 4 hauls near the Tail End of the Monkey Bank, 2 hauls at the Clay Deeps, 2 hauls NE of the Cleaver Bank. Further trawls were made in other areas
Moorings, landers, buoys 
Biology and fisheries 
Seston54° 4' 59" N  3° 45' 0" E — First station worked by the 30" high speed plankton sampler (TTN)