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A comment on Titanic tourist sub goes missing sparking search. Parent comment
https://en.wikipedia.org/wiki/Jason_(ROV)
Titanic was also discovered with a tethered sled, the Argo:
https://en.wikipedia.org/wiki/Argo_(ROV)
It was then explored with a combination DSV and tethered ROV:
https://en.wikipedia.org/wiki/DSV_Alvin
https://en.wikipedia.org/wiki/Jason_Jr.
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https://en.wikipedia.org/wiki/Jason_(ROV)
Titanic was also discovered with a tethered sled, the Argo:
https://en.wikipedia.org/wiki/Argo_(ROV)
It was then explored with a combination DSV and tethered ROV:
https://en.wikipedia.org/wiki/DSV_Alvin
https://en.wikipedia.org/wiki/Jason_Jr.