RV Lough Foyle LF/23/92

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Lough Foyle (74LG)
Cruise identifierLF/23/92
Cruise period1992-10-05 — 1992-10-13
Port of departureBelfast, United Kingdom
Port of returnBelfast, United Kingdom
ObjectivesTechnical conservation measures
1. To compare catch rates of a prawn trawl net fitted with a panel of square shaped mesh in its top sheet with one in which the top sheet has a panel of very large (150mm) diamond shaped mesh.
2. To examine the affect of longitudinal strengthening ropes of fish escapement from a prawn trawl fitted with a panel of square mesh.
3. To investigate fish escapement from a panel of square mesh of knotted twine compard to knotless twine fitted to a prawn trawl.
4. To collect population data on Nephrops and by catch at each station.
5. To collect basic size composition and meat yield data of trawl caught brown crab (Cancer pagurus).
6. To collect samples of squid for future analysis at University College Cork.
Chief scientistRichard P Briggs (Department of Agriculture for Northern Ireland)
Cruise reportRV Lough Foyle LF/23/92 cruise report lf23_92.pdf (0.41 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificWestern Irish Sea.
Track chartsRV Lough Foyle LF/23/92 cruise track — lf23_92track.pdf (0.02 MB) 
Biology and fisheries 
CrustaceansQuantity: number of hauls = 14
Description: Nephrops survey to determine distribution and abundance.
Other biological/fisheries measurementQuantity: activity duration in hours = 36
Description: RCTV and mini camera used to film fish escaping from the square mesh panels and of fish behaviour inside the net.