How reliable is Electronic Bottom Tracking in deep or rough sea conditions?

Hi everyone, am new to oceanography so sorry if this sounds basic and I have been reading a bit about survey vessels and how they measure seabed depth and movement, and I keep coming across Electronic Bottom Tracking systems and from what I understand, it helps ships keep a reference to the seafloor using acoustic signals and what I don’t fully understand is how accurate it stays when conditions change, which are in the areas with strong currents or uneven seabeds, does the signal still stay stable or does it start to drift? I also wonder how it performs in deeper water where the signal has to travel much further. Does it lose reliability over distance, or is it corrected automatically by onboard systems? Some of the equipment I saw online looked very similar across different brands, almost like they might come from shared manufacturing sources you sometimes see on Alibaba type listings, just with different labels added later. That made me even more confused about differences in quality.

If anyone here works with these systems on research vessels or in hydrographic surveys, I would really appreciate your insight. I’m just trying to understand how much trust we actually place on this data when mapping the ocean floor. Thank you in advance to anyone who replies and helps me learn.