Cruise inventory

RV Lough Foyle LF/22/96

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Lough Foyle (74LG)
Cruise identifierLF/22/96
Cruise period1996-05-26 — 1996-05-30
StatusCompleted
Port of departureBelfast, United Kingdom
Port of returnBelfast, United Kingdom
PurposeResearch
ObjectivesRoxAnn survey of NI commercial scallop grounds
1. To use the acoustic ground classification system, RoxAnn, to survey sediment types at commercial scallop fishing areas in the Irish Sea.
2. To provide ground truthing information for RoxAnn using underwater cameras mounted on a towed sledge and static frame.
3. a) To collect the following scallop data:
i) age composition
ii) weight, height and length of individual scallops
b) to retain scallop shell samples for ongoing morphometric studies
c) identify and quantify fauna taken as bycatch in the dredges.
Chief scientistBridgeen Magorrian (Department of Agriculture for Northern Ireland)
Cruise reportRV Lough Foyle LF/22/96 cruise report lf22_96.pdf — access key 'C' (0.16 MB)  RV Lough Foyle LF/22/96 cruise report lf22_96i.pdf (0.18 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificIrish Sea and North Channel
Track chartsRV Lough Foyle LF/22/96 cruise track — lf22_96itrack.pdf (00 MB)  RV Lough Foyle LF/22/96 cruise track — lf22_96track.pdf (00 MB) 
Measurements 
Biology and fisheries 
Sediment trapsQuantity: number of images = 1
Description: Sediment surveys and collection of scallop data. A 35 minute camera tow took place.
Sediment trapsQuantity: number of images = 1
Description: Camera sledge was deployed in Area V and surveyed using RoxAnn. Scallops were sampled
MolluscsQuantity: number of deployments = 1
Description: A RoxAnn survey took place , the tracks were deployed at three separate locations within the box. Scallops were sampled.
MolluscsQuantity: number of measurements = 2
Description: In Area II scallop dredges and RoxAnn surveys tooks place.
MolluscsQuantity: number of images = 1
Description: Camera sledge was deployed in Area V and surveyed using RoxAnn. Scallops were sampled
MolluscsQuantity: number of measurements = 2
Description: Area II was surveyed using RoxAnn and the camera sledge deployed.
MolluscsQuantity: number of measurements = 2
Description: In Area I and Area II scallop dredges and RoxAnn surveys took place.
MolluscsQuantity: number of images = 1
Description: Sediment surveys and collection of scallop data. A 35 minute camera tow took place.