Cruise inventory

RV Corella 17/73

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corella (74CX)
Cruise identifier17/73
Cruise period1973-11-26 — 1973-12-06
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To determine the reactions of plaice to a Granton trawl by extending the series of experiments carried out on CORELLA 13 and 18/1971, 15, 16, 17 and 18/1972 and 3, 12 and 16/1973.
2. Capture of live dabs for use in laboratory experiments.
3. Collection of dab gonads and brains for histological examination.
4. Collection of flat and round fish pituitary glands for hormone analysis.
5. Collection of phytoplankton sample for Dr Dodge (London University).
6. Collection of live plaice for use on future cruises.
7. To salvage current meter rig at Station XC with the help of divers if weather was suitable on 26 November.

Sea bed trial tows were made with the headline height telemeter system and other tests were made using receiving transducers. All the fish taken, apart from those kept alive in tanks, were dissected and pituitary and pineal glands removed
Chief scientistJ P Bridger (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Corella 17/73 cruise report corella17_73.pdf — access key 'C' (0.20 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificSouthern North Sea: Texel area, Den Helder, Southwold-Aldburgh area, off the Suffolk-Essex coast, Smith's Knoll
Biology and fisheries 
SestonQuantity: number of stations = 1
Description: Station XC. Plankton haul made
Demersal fishQuantity: number of hauls = 5
Description: 3 hauls for flatfish made off the Suffolk-Essex coast. 2 trawl hauls made at Smith's Knoll for live flatfish
Demersal fishQuantity: number of experiments = 28
Description: On 21 occasions, tagged fish passed between the otter boards, on 12 occasions they were recaptured
Demersal fishQuantity: number of specimens = 33
Description: 18 plaice including 8 recaptured fish and 15 dabs were returned to the laboratory alive