Cruise inventory

RV Lough Foyle LF/20/92

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Lough Foyle (74LG)
Cruise identifierLF/20/92
Cruise period1992-09-04 — 1992-09-18
StatusCompleted
Port of departureBelfast, United Kingdom
Port of returnBelfast, United Kingdom
PurposeFisheries
ObjectivesDemersal young fish survey
1. To obtain indices of abundance of juvenile gadoids to facilitate predictions of stock-size and yield of recruited fish in future years.
2. To investigate the diets of predatory fish species in relation to the distribution and relative abundace of their fish prey, with particular emphasis on predation on commercial species.
3. To obtain further information on distribution of different age-classes of fish to facilitate interpretation of data from commercial catches.
4. To gather information on distribution and relative abundance of squid.
Chief scientistRichard P Briggs (Department of Agriculture for Northern Ireland)
Cruise reportRV Lough Foyle LF/20/92 cruise report lf20_92.pdf — access key 'C' (0.36 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificIrish Sea and North Channel
Track chartsRV Lough Foyle LF/20/92 cruise track — lf20_92track.pdf (00 MB) 
Measurements 
Biology and fisheries 
ZooplanktonQuantity: number of measurements = 9
Description: Stations 216, 96, 51, 77, 76, 243, 216, 96 and 32 were all fished. Stations 216, 96 and 32 had large hauls of jelly fish. 76 was rich in pre-spawning herring.
ZooplanktonQuantity: number of measurements = 5
Description: Stations 245, 246, 249, 250 and 259. At 249 and 250 there was an abudance of jellyfish.
ZooplanktonQuantity: number of measurements = 5
Description: Stations 97, 45, 99, 48 and 51 were fished. At 51 a lot of jellyfish were brought up but had to be discarded.
Pelagic fishQuantity: number of measurements = 4
Description: Stations 64, 256, 257 and 258 were all trawled.
Pelagic fishQuantity: number of measurements = 6
Description: Stations 79, 78, 73, 71, 11 and 208 were completed though the weather was somewhat unfavourable.
Pelagic fishQuantity: number of measurements = 5
Description: Stations 97, 45, 99, 48 and 51 were fished. At 51 a lot of jellyfish were brought up but had to be discarded.
Pelagic fishQuantity: number of measurements = 9
Description: Stations 216, 96, 51, 77, 76, 243, 216, 96 and 32 were all fished. Stations 216, 96 and 32 had large hauls of jelly fish. 76 was rich in pre-spawning herring.
Pelagic fishQuantity: number of measurements = 5
Description: Stations 89, 75, 92, 93 and 56 were all fished in a moderate breeze.
Pelagic fishQuantity: number of measurements = 5
Description: Stations 94, 95, 103, 50 and 98 were all fished.
Pelagic fishQuantity: number of measurements = 3
Description: Stations 80, 70 and 203 were all fished. The fishing of station 80 was unsuccessful.
Pelagic fishQuantity: number of measurements = 3
Description: Stations 83, 86 and 35 were fished in calm conditions.
Pelagic fishQuantity: number of measurements = 1
Description: Due to strong winds only station 90 was trawled.
Pelagic fishQuantity: number of measurements = 5
Description: Stations 245, 246, 249, 250 and 259. At 249 and 250 there was an abudance of jellyfish.
Demersal fishQuantity: number of measurements = 3
Description: Stations 83, 86 and 35 were fished in calm conditions.
Demersal fishQuantity: number of measurements = 4
Description: Stations 64, 256, 257 and 258 were all trawled.
Demersal fishQuantity: number of measurements = 5
Description: Stations 245, 246, 249, 250 and 259. At 249 and 250 there was an abudance of jellyfish.
Demersal fishQuantity: number of measurements = 9
Description: Stations 216, 96, 51, 77, 76, 243, 216, 96 and 32 were all fished. Stations 216, 96 and 32 had large hauls of jelly fish. 76 was rich in pre-spawning herring.
Demersal fishQuantity: number of measurements = 5
Description: Stations 94, 95, 103, 50 and 98 were all fished.
Demersal fishQuantity: number of measurements = 1
Description: Due to strong winds only station 90 was trawled.
Demersal fishQuantity: number of measurements = 5
Description: Stations 97, 45, 99, 48 and 51 were fished. At 51 a lot of jellyfish were brought up but had to be discarded.
Demersal fishQuantity: number of measurements = 5
Description: Stations 89, 75, 92, 93 and 56 were all fished in a moderate breeze.
Demersal fishQuantity: number of measurements = 6
Description: Stations 79, 78, 73, 71, 11 and 208 were completed though the weather was somewhat unfavourable.
Demersal fishQuantity: number of hauls = 46
Description: Rockhopper trawls
Demersal fishQuantity: number of measurements = 3
Description: Stations 80, 70 and 203 were all fished. The fishing of station 80 was unsuccessful.