Marine Traffic gives the
course data for Ocean Shield
They are only achieving 2-3 transects per day so following 023/203 course on the 6th & 7th, they are now following 113/293.
It appears they take parallel transects with some 2nm separation, initial then a track either side.
The cable length can be up to 18,000m which complicates position of the actual TPL but the later detections (by time) seem to be around 103.90; -21.135.
I have been unable to completely reconcile
the chart locations issued with the AIS track for those times provided in the briefing; in particular #3 and #4 seem to be be reversed.
The good news is that the depth in that particular area is less than 4,500m (4,050m - 4,200m according to GE) although #1 & #2 detections are in an area where depth could be up to 4,800m.
edit -mm43 - they appear to slow (1.2-1.6KTS) when detecting - (also at the end of a pass while reeling in the cable; conversely speed up at the beginning of a pass while reeling out)
The TPL appears to be approaching an interesting area in about 1-2 hours time so hopefully we might have more information at tomorrows brief.
AIS also shows ECHO approaching with an ETA in the search area in about 15hrs