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Tragic Titan submersible’s $62 SanDisk memory card found undamaged at wreckage site
(www.tomshardware.com)
this post was submitted on 19 Oct 2025
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Ok, so tell me how you are going to get a location fix underwater, in the dark, with no landmarks to orient yourself, in constantly shifting currents?
Even the Navy's most advanced nuclear submarines have to surface to get their location. This thing was a carbon fiber tube with an Xbox controller and an idiot designer.
Like on every ship ! by looking at the stars
U mean starfish?
Yes and they use SINS, now this probably didn't have an expensive SINS setup but they did have communication with the surface that was tracking them on sonar. They did have location data.
You use your starting point as a baseline and keep track of the movement of the craft.
Just because you set the sub to a set knot speed, doesn't mean it'll actually cover that distance in that time. There are ton of currents going in all different directions.
Dead reckoning which is usually hit or miss on the surface but better than nothing. Probably worse under the water. It's why all these subs that dive to Titanic have to drop down until they hit the floor and then swim around until they find a landmark that points to the ship. They only have a rough idea of where they are when they get to the bottom.