Titanic submarine best and worst scenarios - bobbing undetected to horror implosion
![Titanic submarine best and worst scenarios - bobbing undetected to horror implosion](https://i2-prod.dailystar.co.uk/incoming/article30290864.ece/ALTERNATES/s615/2_US-CANADA-TITANIC-SUBMERSIBLE.jpg)
A huge search-and-rescue operation is currently underway to find the missing OceanGate Expeditions vessel near the Titanic shipwreck, around 12,500 feet under the sea