and honestly a lot of it seems quite amateur hour. One of the steering motors was fitted backwards. When they discovered this, at the bottom of the ocean and a few hundred feet from Titanic, the solution they used was to hold the gamepad at right angles to compensate. That time they proceeded with the tour and made it back, but I can see how things could have gone a lot more wrong.
https://www.bbc.co.uk/programmes/p0fpz9zw
and honestly a lot of it seems quite amateur hour. One of the steering motors was fitted backwards. When they discovered this, at the bottom of the ocean and a few hundred feet from Titanic, the solution they used was to hold the gamepad at right angles to compensate. That time they proceeded with the tour and made it back, but I can see how things could have gone a lot more wrong.