Cruise inventory

RV Lough Foyle LF/07/99

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Lough Foyle (74LG)
Cruise identifierLF/07/99
Cruise period1999-02-15 — 1999-02-18
StatusCompleted
Port of departureBelfast, United Kingdom
Port of returnBelfast, United Kingdom
PurposeResearch
ObjectivesNW Irish Sea scallop stocks
1. To survey the scallop, Pecten maximus grounds off the County Down coast and collect the following scallop data:
a) catch per unit effort
b) scallop age composition
c) weight, height and length of individual scallops
d) abductor muscle and gonad weights
e) scallop shell samples were retained for morphometric study.
2. Collect samples of scallop abductor muscle for future metal analysis.
3. Identify and quantify macrofauna associated with scallops.
Chief scientistRichard P Briggs (Department of Agriculture for Northern Ireland)
Cruise reportRV Lough Foyle LF/07/99 cruise report lf07_99.pdf — access key 'C' (0.20 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificNW Irish Sea and North Channel
Measurements 
Biology and fisheries 
ZoobenthosQuantity: number of stations = 32
Description: Benthic fauna associated with scallops were noted from all tows. 9 species of Echinodermata, 6 species of Crustacea, 4 species of Mullusca, and 5 species of Pisces were sampled.
MolluscsQuantity: number of stations = 32
Description: Shells were retained for future morphometric analysis. Scallops were weighed and measured (shell length and height). Meat yield was determined from abductor muscle and gonad weight. Shells were aged by examination of growth bands on the flat shell and by microscopic examination of hinge ligament scars.
Moorings, landers, buoys 
Geology and geophysics 
Dredge54° 42' 11" N  5° 36' 23" W — Tow 8, Area IV, Mean depth 17m
Dredge54° 42' 29" N  5° 36' 11" W — Tow 10, Area IV, Mean Depth 21.5m
Dredge54° 36' 54" N  5° 26' 29" W — Tow 27, Area II, Mean depth 40m
Dredge54° 46' 35" N  5° 40' 11" W — Tow 1, Area V, Mean depth 25m
Dredge54° 48' 29" N  5° 40' 41" W — Tow 2, Area V, Mean depth 35.5m
Dredge54° 46' 29" N  5° 39' 41" W — Tow 3, Area V, Mean depth 31.5m
Dredge54° 47' 11" N  5° 40' 17" W — Tow 4, Area V, Mean depth 39m
Dredge54° 43' 30" N  5° 40' 35" W — Tow 5, Area IV, Mean depth 13m
Dredge54° 43' 11" N  5° 40' 47" W — Tow 6, Area IV, Mean depth 10.5m
Dredge54° 42' 23" N  5° 39' 23" W — Tow 7, Area IV, Mean depth 9.5m
Dredge54° 42' 23" N  5° 35' 53" W — Tow 9, Area IV, Mean depth 19.5
Dredge54° 28' 11" N  5° 22' 0" W — Tow 11, Area 1, Mean depth 45.5m
Dredge54° 28' 30" N  5° 23' 35" W — Tow 13, Area I, Mean depth 33m
Dredge54° 20' 41" N  5° 26' 29" W — Tow 14, Area I, Mean depth 28.5m
Dredge54° 20' 53" N  5° 26' 11" W — Tow 15, Area I, Mean depth 24.5m
Dredge54° 20' 35" N  5° 26' 47" W — Tow 16, Area I, Mean depth 25m
Dredge54° 22' 5" N  5° 22' 17" W — Tow 18, Area I, Mean depth 39m
Dredge54° 20' 29" N  5° 23' 47" W — Tow 19, Area 1, Mean depth 35m
Dredge54° 33' 17" N  5° 22' 59" W — Tow 20, Area II, Mean depth 58m
Dredge54° 33' 5" N  5° 24' 0" W — Tow 21, Area II, Mean depth 47m
Dredge54° 34' 35" N  5° 24' 5" W — Tow 22, Area II, Mean depth 51m
Dredge54° 34' 23" N  5° 25' 53" W — Tow 23, Area II, Mean depth 39.5m
Dredge54° 36' 47" N  5° 25' 41" W — Tow 24, Area II, Mean depth 43m
Dredge54° 35' 11" N  5° 26' 47" W — Tow 25, Area II, Mean depth 34m
Dredge54° 35' 47" N  5° 26' 5" W — Tow 26, Area II, Mean depth 41.5m
Dredge54° 36' 5" N  5° 28' 11" W — Tow 28, Area II, Mean depth 35m
Dredge54° 36' 17" N  5° 27' 29" W — Tow 29, Area II, Mean depth 37m
Dredge54° 44' 29" N  5° 35' 11" W — Tow 30, Area III, Mean depth 35.5m
Dredge54° 45' 18" N  5° 34' 12" W — Tow 31, Area III, Mean depth 57m
Dredge54° 44' 53" N  5° 32' 47" W — Tow 32, Area III, Mean depth 58m
Dredge54° 28' 41" N  5° 22' 35" W — Tow 12, Area 1, Mean depth 42m
Dredge54° 23' 24" N  5° 23' 35" W — Tow 17, Area I, Mean depth 36m