Cruise inventory

RV Lough Foyle LF/18/98

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Lough Foyle (74LG)
Cruise identifierLF/18/98
Cruise period1998-04-26 — 1998-05-01
StatusCompleted
Port of departureBelfast, United Kingdom
Port of returnBelfast, United Kingdom
PurposeFisheries
ObjectivesSprat and juvenile herring study
1. To quantify food selection and intake of sprat and juvenile herring in the western Irish Sea, with particular reference to predation on eggs and larvae of commercial fish species.
2. To estimate the biomass and population structure of sprat and juvenile herring in the study area.
3. To investigate competition for resources between sprat and juvenile herring.
4. To investigate growth and reproductive parameters of sprat.
Chief scientistMike Armstrong (Department of Agriculture for Northern Ireland)
Cruise reportRV Lough Foyle LF/18/98 cruise report lf18_98.pdf — access key 'C' (0.22 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificWestern Irish Sea
Track chartsRV Lough Foyle LF/18/98 cruise track — lf18_98track.pdf (00 MB) 
Moorings, landers, buoys 
Biology and fisheries 
Demersal fish54° 6' 34" N  5° 38' 16" W — Tow 7. Time 15.41. Mean depth 43m. Catch 96kg.
Demersal fish54° 10' 55" N  5° 32' 35" W — To look at food intake of sprat and herring, competition between species and growth rates. Tow 1. Time 07.55. Mean depth 35m. Catch 140kg.
Demersal fish54° 3' 59" N  5° 43' 23" W — Tow 2. Time 11.26. Mean depth 37m. Catch 75kg.
Demersal fish53° 56' 2" N  6° 1' 38" W — Tow 3. Time 15.55. Mean depth 30m. Catch 95kg.
Demersal fish53° 34' 15" N  5° 48' 40" W — Tow 5. Time 10.30. Mean depth 68m. Catch 19kg.
Demersal fish54° 6' 20" N  5° 38' 19" W — Tow 11. Time 15.25. Mean depth 38m. Catch 270kg.
Demersal fish54° 6' 47" N  5° 38' 35" W — Tow 8. Time 20.50. Mean depth 28m. Catch 203kg.
Demersal fish54° 6' 32" N  5° 38' 25" W — Tow 9. Time 20.50. Mean depth 39m. Catch 37kg.
Demersal fish54° 6' 57" N  5° 37' 18" W — Tow 12. Time 20.50. Mean depth 29m. Catch 198kg.
Demersal fish53° 25' 15" N  5° 53' 16" W — Tow 4. Time 07.03. Mean depth 42m. Catch 245kg.
Demersal fish54° 6' 43" N  5° 36' 55" W — Tow 10. Time 08.57. Mean depth 34m. Catch 123kg.
Demersal fish54° 6' 34" N  5° 38' 16" W — Tow 6. Time 15.41. Mean depth 43m. Catch 96kg.