I'm not that familiar with the bathymetry[1] of the area, but I have been seeing reports that the locations are between 3000m and 6000m deep. At that depth, ev

I'm not that familiar with the bathymetry[1] of the area, but I have been seeing reports that the locations are between 3000m and 6000m deep. At that depth, even a strong persistent current is probably only a few cm/sec. For the precision of TMA, that's effectively stationary; the noise in the bearing rate measurement is going to be greater magnitude than the true bearing rate. [1] Why is "bathymetry" not in Chrome's spelling dictionary?