Context: https://www.bbc.com/news/world-us-canada-65953872
The above titanic submersible that went missing can only send short text messages from the ship to the submersible. From my understanding there is no GPS underwater and radio communication is impossible. How can Navy submarines communicate and navigate while submerged in the ocean but the missing submersible can’t?
In: 121
I’m confused by this missing submersible. As I understand it, it is a tourist vehicle. The last time I was on a tourist submarine, it was designed with positive buoyancy. In other words, it had to push itself down to submerge. In the event of a power failure, the sub would automatically float to the surface. In addition, there were ballast weights that could be released manually that would accomplish the same thing. Was this submersible not equipped with the same features?
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