Resources

FRV Scotia 0317S

Cruise plan

Cruise Info. 
Ship name (ship code)FRV Scotia (748S)
Cruise identifier0317S
Cruise period2017-02-14 — 2017-03-06
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeResearch
ObjectivesObjectives

1. Demersal trawling survey of the grounds off the north and west of Scotland in ICES Subarea VIa.
2. To obtain temperature and salinity data from the surface and seabed at each trawling station.
3. Collect additional biological data in connection with the EU Data Collection Framework (DCF).

Procedures

Loading of the trawl gear and scientific equipment will take place on 11 February with rigging and testing being completed on the same day. Scotia will sail on the morning of 14 February. A training haul will be undertaken during the passage north to ensure all fishing gear/sensors are working effectively. Scotia will then commence fishing operations the next morning on predefined stations off the north Scottish coast and west of 4'W with weather conditions thereafter determining the route taken on the survey.

This is a random-stratified survey design with trawl stations being distributed within ten predefined strata covering the sampling area. 64 primary and 45 secondary stations have been generated. The intention is for 64 trawls to be undertaken on suitable ground as near to the specified primary sampling positions as is practicable, and where possible within a radius of five nautical miles of the sampling position. In the event that trawling is not possible within 5 nm of any primary station then the nearest appropriate secondary station will be used. Hauls will be of 30 minutes duration unless circumstances dictate otherwise. Where possible fishing operations will be restricted to daylight hours. Exact start and finish times will, however, vary slightly according to geographical location. The Scanmar system will be used to monitor the headline height, wing spread and door spread for each haul. Bottom contact data from each trawl will also be collected using the NOAA bottom contact sensor, which will be mounted on a bar in the centre of the ground-gear. In addition to the routine sampling, biological data will be collected for target species in line with the EU data regulation. All fish will be processed in accordance with Standing Instructions.

Allowances will be made in the Firth of Clyde for surveying away from cable laying operations, which are underway for the Western HVDC Link (high-voltage direct current) between Hunterston and Flintshire Bridge in Wales.

A CTD cast will be taken at each trawl station.
Chief scientistJames Drewery (Marine Scotland Aberdeen Marine Laboratory)
Cruise programmeFRV Scotia 0317S cruise programme 0317s.pdf  (0.45 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
North East Atlantic Ocean (limit 40W)
SpecificNorth & West of Scotland (ICES Subarea VIa)