An aircraft heard sounds at 30-minute intervals from the area where the sub disappeared, according to internal e-mails sent to DHS leadership obtained by Rolling Stone
Assuming they’re on the bottom, they’d have to get a ship with about 4 km of cable to pull them up. (More probably. The titanic is at about 3.8km; as well as the ROVs
I’m not sure it has a hatch that can be used to transfer passengers onto a rescue sub. Kinda sounds like it doesn’t. (Assuming they even have a rescue sub in the area.)
The Titan does not have an externally opening hatch at all. The surface crew actually bolts and torques the front section of the submersible in place.
Once/if the Titan is located (itself a huge challenge), the only way the Titan can be rescued is by either repairing the submersible underwater so that it can float to the surface under its own power or by affixing a 4km tow cable to it and winching it to the surface. Only at the surface can they crack it open without killing everyone onboard.
