I'm not disputing that ship traffic is reduced but it has not stopped. The AIS transmitter on each ship is VHF, so it's limited to line-of-sight, about 15 miles between ships. A ship in the mid-ocean is thousands of miles out of range of the AIS system and therefore invisible to it.
I was awaiting a car from England a few years ago and for six days it was not on the tracking website until it was approached the coast of Newfoundland.
I'm not disputing that ship traffic is reduced but it has not stopped. The AIS transmitter on each ship is VHF, so it's limited to line-of-sight, about 15 miles between ships. A ship in the mid-ocean is thousands of miles out of range of the AIS system and therefore invisible to it.
ReplyDeleteI was awaiting a car from England a few years ago and for six days it was not on the tracking website until it was approached the coast of Newfoundland.
Al_in_Ottawa