FRV Scotia 1503S
Cruise summary report
|Ship name (ship code)||FRV Scotia (748S)|
|Cruise period||2003-10-04 — 2003-10-22|
|Port of departure||Aberdeen, United Kingdom|
|Port of return||Aberdeen, United Kingdom|
|Objectives||1. To conduct an acoustic survey to estimate the abundance and distribution of mackerel in the northern North Sea (ICES division IVa).
2. To obtain samples of mackerel for biological analysis, including age, length, weight, sex and maturity.
3. To conduct a towed O.P.C./C.T.D. survey of the Fladen area of the North Sea during transit.
|Chief scientist||Paul G Fernandes (Fisheries Research Services Aberdeen Marine Laboratory)|
|Cruise report||(0.10 MB)|
|Specific||Northern North Sea: Fladen Ground, Viking Bank|
|CTD stations||Quantity: number of stations = 14|
|Subsurface temperature and salinity measurements||Quantity: activity duration in days = 18|
Description: Thermosalinograph measurements
|Biology and fisheries|
|Pelagic fish||Quantity: number of hauls = 19|
Description: 15 trawls contained mackerel
|Acoustic reflection on marine organisms.||Quantity: number of measurements = 981|
Description: Acoustic log intervals of 15 minutes duration
|Other biological/fisheries measurement||Quantity: number of deployments = 3|
Description: Tows of the multisampling towed body(optical plankton counter, CTD, pup nets) at 130 metres at a speed of 5.5 knots.
|Other biological/fisheries measurement||Quantity: number of specimens = 4732|
Description: mackerel measured for length, 886 sampled for weight, sex, maturity and otoliths
|Other biological/fisheries measurement||Quantity: number of specimens = 3965|
Description: fish measured for length, herring 3816, saithe 118, haddock 31