I tried to research, but it's not clear. It says the gulf stream can reach 5mph, but also that that is near the surface, and it's slower the deeper you go. A

I tried to research, but it's not clear. It says the gulf stream can reach 5mph, but also that that is near the surface, and it's slower the deeper you go. A buoy ascends at 2.8 m/s. 3000m would yield, meaning about 18 minutes of rise time. If we assume that water is at max speed the whole way through, we'd be talking about 1-2 miles. Realistically, because most of its rise is in deep sea conditions, I imagine it'd be less than 1 mile. But, if it made contact as soon as it reached surface with a GPS location, I'm sure some scientist could calculate about how far it drifted from the water conditions. I'd imagine they could get it down to a few hundred foot radius?