RV Lough Foyle LF/18/98
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Lough Foyle (74LG) |
| Cruise identifier | LF/18/98 |
| Cruise period | 1998-04-26 — 1998-05-01 |
| Status | Completed |
| Port of departure | Belfast, United Kingdom |
| Port of return | Belfast, United Kingdom |
| Purpose | Fisheries |
| Objectives | Sprat 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 scientist | Mike Armstrong (Department of Agriculture for Northern Ireland) |
| Cruise report |  (0.22 MB) |
| Ocean/sea areas | |
| General | Irish Sea and St. George's Channel |
| Specific | Western Irish Sea |
| Track charts | (0.02 MB) |
| Moorings, landers, buoys | |
| Biology and fisheries | |
| Demersal fish | 54° 6' 32" N 5° 38' 25" W — Tow 9. Time 20.50. Mean depth 39m. Catch 37kg. |
| Demersal fish | 54° 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 fish | 54° 3' 59" N 5° 43' 23" W — Tow 2. Time 11.26. Mean depth 37m. Catch 75kg. |
| Demersal fish | 53° 56' 2" N 6° 1' 38" W — Tow 3. Time 15.55. Mean depth 30m. Catch 95kg. |
| Demersal fish | 53° 25' 15" N 5° 53' 16" W — Tow 4. Time 07.03. Mean depth 42m. Catch 245kg. |
| Demersal fish | 54° 6' 57" N 5° 37' 18" W — Tow 12. Time 20.50. Mean depth 29m. Catch 198kg. |
| Demersal fish | 54° 6' 34" N 5° 38' 16" W — Tow 6. Time 15.41. Mean depth 43m. Catch 96kg. |
| Demersal fish | 54° 6' 34" N 5° 38' 16" W — Tow 7. Time 15.41. Mean depth 43m. Catch 96kg. |
| Demersal fish | 54° 6' 47" N 5° 38' 35" W — Tow 8. Time 20.50. Mean depth 28m. Catch 203kg. |
| Demersal fish | 54° 6' 43" N 5° 36' 55" W — Tow 10. Time 08.57. Mean depth 34m. Catch 123kg. |
| Demersal fish | 54° 6' 20" N 5° 38' 19" W — Tow 11. Time 15.25. Mean depth 38m. Catch 270kg. |
| Demersal fish | 53° 34' 15" N 5° 48' 40" W — Tow 5. Time 10.30. Mean depth 68m. Catch 19kg. |
