What are the conditions around the Titanic wreck site? This communication may get disrupted if Titan is no longer in an upright position or entangled at the bottom. Very limited texting from Titan to the support ship is available via a sort of “acoustic modem” if the submersible is in the right range. Titan communicates with its support vessel using acoustic systems that send pings back and forth to provide its location. The particular physics of water and extreme depth in the area means that technologies we use on land and even in space, like satellite communications and GPS, won’t work. Why haven’t we heard from the crew? Can’t they just use a satellite phone? When it’s ready to return, the vessel drops ballast and floats to re-dock at the platform, which is then raised to the support ship. Four electric thrusters help the neutrally buoyant Titan navigate on the seafloor. It’s lowered about 30 feet, or below the surface wave action, on a tethered platform, and then uses ballast to drop down the remaining 12,500 feet. Unlike a submarine, which can sail in and out of ports on its own power, the 20-foot-long, 20,000-pound Titan is a submersible, which means it’s dependent on a surface support ship that transports it to a site. ( Bob Ballard and James Cameron on what we can learn from the Titan tragedy.) Their last communication was roughly 100 minutes after their descent. There are a number of factors that will make any rescue or recovery incredibly difficult-including the remoteness of the area, the extreme depth of the site, and the fact that the five-person crew had 96 hours maximum of emergency air when they first descended.
The Oceangate submersible Titan has been missing near the Titanic wreck site in the North Atlantic since early Sunday morning.
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