[fi358]

Is the exact positions public info or is it just crude positions? BTW, if the exact cable positions is public info, where is it available?

[jabl]

What do you consider 'exact'? Approximate positions are drawn on nautical charts, so that ships don't accidentally go and try to anchor in the vicinity. Plenty accurate enough for a ship to 'accidentally' drop an anchor and drag it along the seabed for miles.

[bluGill]

I suspect the exact position is not known. The drop the cables over the side and currents make then drift on the way down.