RV Cefas Endeavour 11/08
Cruise summary report
|Ship name (ship code)||RV Cefas Endeavour (74E9)|
|Cruise period||2008-05-18 — 2008-05-31|
|Port of departure||Swansea, United Kingdom|
|Port of return||Lowestoft, United Kingdom|
1. To conduct multidisciplinary (acoustic and sampling) surveys within a discrete area in the mid-Irish Sea and another north of Cape Wrath (Solan Bank). This work is in support of JNCC's requirement to designate SACs under the EU Annex I Habitats Directive.
2. To conduct 12hrs of SPI camera work at the Souter Point dredged material disposal site.
Narrative: All times are in GMT.
Cefas staff travelled to Swansea on 18th May and began mobilising the vessel during the day. JNCC and BGS staff joined the vessel in Swansea on 19th May. Safety inductions were held for staff in the afternoon and a toolbox talk was held in the evening. Mobilization was completed on the 19th and the Endeavour sailed at 18:00, as planned. The vessel steamed immediately for the mid-Irish Sea AoS, situated roughly midway between Ireland and Anglesey arriving on site at 07:30.
Area 1. Mid-Irish Sea
A CTD dip was completed ahead of the planned acoustic survey. Six broadscale sidescan, multibeam and AGDS survey lines were run between 08:00 and 21:00 on 20th May. It was agreed that we would run the three acoustic lines in the central part of the planned grid of 10 lines as a priority to establish a signature for MDAC (methane derived authigenic carbonate) over sites where it had previously been identified during SEA6. We would then run the remainder of the planned lines to the west of the AoS, avoiding Irish waters. Lines MIS 03 & MIS 07 were intended to be longer than the remainder of the grid in order to provide wider information on the presence of MDAC. However, it was decided to truncate these lines to the same length as the remainder of the grid lines. The acoustic data was processed as it was acquired so that georeferenced acoustic images could be loaded onto a project GIS along with existing data from SEA6 (Texel 10 and Texel 11) and BGS. The GIS data was used to select sites that would be used to groundtruth the acoustic images. The
|Chief scientist||David Stephen Limpenny (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory), William John Meadows (Centre for Environment, Fisheries and Aquaculture Science Lowestoft Laboratory)|
|Cruise programme||(0.02 MB)|
|Cruise report||(0.10 MB)|
|General||Irish Sea and St. George's Channel|
North East Atlantic Ocean (limit 40W)
|Specific||Mid-Irish Sea and Solan Bank|
|Track charts||(0.09 MB)|