Cruise inventory

RV Cefas Endeavour 24/16

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cefas Endeavour (74E9)
Cruise identifier24/16
Cruise period2016-11-11 — 2016-11-16
StatusCompleted
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
PurposeResearch
ObjectivesAims

1. Service SmartBuoys at Dowsing, Warp and West Gabbard.
2. Zooplankton nets at West Gabbard SmartBuoy site.
3. Service waverider buoys at Torness. Forth and Tyne.
4. Deploy noise monitoring lander at Dowsing.

Narrative

Endeavour sailed on time (17:30 11/11/16) and went directly to the West Gabbard 2 site. One CTD profile and water samples were collected. It then proved impossible to engage the DP so it was decided to collect a ring-net sample before returning to Lowestoft to await technical assistance in the morning. On the morning of the 12th the GPS feed issue was fixed via telephone support. By this time the ship was 7 hrs from the Warp SmartBuoy and therefore 24 hrs behind schedule.

The ship proceeded north to the Dowsing where the "noise lander" was deployed and the SmartBuoy serviced along with the customary water samples. Continuing north the Tyne/Tees waverider was serviced in the morning of the 13th. After 2hrs steaming north it was realised that the light cover of the waverider had not been removed so it was necessary to return. The ships boat was launched to go and remove the light cover at sea level rather than risk recovering the waverider to deck. In the clement weather this was a safe option with the added advantage of giving one of the boats a run at sea. The time lost meant the Firth of Forth waverider had to wait until the morning of the 14th. This was successful and uneventful and followed by the equally efficacious service of the waverider and guard buoy off Torness nuclear power station. The Endeavour made a slow passage for timed arrival at the Dowsing to retrieve the "noise lander" in daylight - using the acoustic release rather than hauling in the surface buffs.

Having agreed an 24hr extension to the original survey to complete the two remaining SmartBuoys, the ship proceeded directly to the West Gabbard 2 site. On arrival, the waverider and SmartBuoy were recovered. The proximity of the two moorings was assessed and they were re-deployed further apart. A single CTD dip preceded a slow overnight steam down to the Warp for a timed arrival at the bar for 09:00 on 16/11/16 to allow sufficient water for safe passage (low springs). Water samples were collected via the CTD rosette before and after the successful service of the SmartBuoy. Two more rosette casts were undertaken before Endeavour made passage to Lowestoft for the evening tide. Passive sampler units from NIVA were deployed on all three SmartBuoys.
Chief scientistDavid Brian Sivyer (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)
Cruise reportRV Cefas Endeavour 24/16 cruise report endeavour24_16.pdf — access key 'C' (0.20 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificWarp, Gabbard, Dowsing