FRV Scotia 1413S Leg1
|Ship name (ship code)||FRV Scotia (748S)|
|Cruise identifier||1413S Leg1|
|Cruise period||2013-10-18 — 2013-10-28|
|Port of departure||Aberdeen, United Kingdom|
|Port of return||Ullapool, United Kingdom|
1. Undertake a nationally co-ordinated demersal trawling survey of anglerfish on the Rockall Plateau and to the west of the Hebrides.
2. Obtain temperature and salinity profiles at each trawling station.
This is a nationally co-ordinated trawl survey to estimate the abundance and distribution of anglerfish. The survey follows a set of protocols drawn up by an industry / science survey planning group made up of Marine Scotland scientists and fishing representatives. These protocols share much in common with the sampling regimes described in Marine Scotland's standing instructions for demersal trawl surveys.
The survey track and sampling locations (randomly selected) will be delivered to the Captain and Fishing Master prior to departure and giving as much notice as possible. Trawling in Irish waters will take place as necessary.
Fishing operations will take place on a 24 hours a day basis, with scientific teams split into two teams working 12 hours on, 12 hours off. One haul of 60 minutes duration will be made at each sampling station; trawling operations will occur in waters up to a maximum of 1000 m. The Scanmar system will be used to monitor wing spread, door spread, headline height and distance covered during each haul. A bottom contact sensor will be mounted on the footrope to record the distance of the trawl off the seabed. Catches will be worked up according to the protocols for the anglerfish surveys.
A CTD will be deployed on the trawl at each station. The ships thermosalinograph will be operated throughout the survey. The ships EK60 scientific echosounder will be operated throughout the cruise to investigate the relationship between ground type and anglerfish distribution.
Normal contacts will be maintained with the Laboratory. The other vessels (charters) on the survey will be contacted each day at approximately 18:00hrs by medium frequency radio.
|Chief scientist||Craig G Davis (Marine Scotland Aberdeen Marine Laboratory)|
|Cruise programme||(0.23 MB)|
|General||North East Atlantic Ocean (limit 40W)|
|Specific||Rockall Plateau, Hebrides.|
|Track charts||(0.15 MB)|