The Liquivision Lynx will tell you where the boat is, and approximately how far it is, as well as how much gas the other divers have left. Also, the Liquivision boat kit will show you, on a laptop, where all the divers are (underwater), how much gas they have left and their approximate distance.
I clicked the link in the post to go check this out. From what I understand, here's the skinny:
1.) Wireless transmitter air-integrated wrist unit with big, bright OLED display, lots of info. on it, though it's a pretty big wrist unit (definitely not a watch style).
2.) Supposed to give you info. on the direction & air supply of fellow Lynx divers within 100 meters (330 feet).
3.) Lynx is about $1,000, the transmitter about $500. Not bad for an upscale wireless AI dive computer these days.
4.) Additionally, there's a Lynx Location Transmitter that can be used to mark a spot (including the dive boat) so Lynx users can detect that spot & reach it. This, too, is $500, and I assume a bit different product from the AI units sold to provide wireless AI capability to the Lynx? The locator transmitter page mentions you can track diver depth, too; is this without that Liquivision Lynx Omniscient Boat Kit?
5.) There's a Lynx Omniscient Boat Kit that lets a person on the boat mark the boat location so divers can return to it, send text messages to the divers, monitor up to 9 users' air supplies, but can it tell you those 9 divers' depths? I see no price for the boat kit.
So, to 'go Lynx,' it'd cost $1,500 per diver, plus $500 to put a locator transmitter on the boat, and this would be good up to 330 feet from the boat (at least).
The boat kit wounds like a nice gadget, but how much money is that going to cost?
And you can't buy any of this yet, right? Due 'Early 2013' though.
How does this directional location function look, though? Is it like a compass with a little dot showing the other diver, or is it like a Geiger Counter, where you wave it around & it 'pings' more intensely when the direction is 'warmer.'
Richard.