Having finished the sidescan sonar lines on Wednesday 31st October at 10:30pm, we spent the night checking sea conditions as it had become too rough for camera work. By morning the wind and swell had calmed enough for us to start the first of the camera tows, lowering the video and stills cameras on their frame to the seabed, between 400m and 800m below us. The aim is to hover the camera frame at about 1.5m off the seabed whilst the boat drifts slowly along.
Towed camera deployment
Selecting video tow sites
Camera clicking on a video tow
We’ve completed 10 video tows today on the south side of Wyville Thomson Ridge, at different depths from 400m down to 800-900m, in some areas where we know trawling has been carried out in the past, and areas where trawling has not been carried out.