I've had many many more crash tonight, it seems like, for that save only, whenever I move more than a few dozen meters from my initial position (after the game loaded), it will crash. I even warped myself to the save shallow without a problem, and a…
PS : Happened again, same place, this time I was using a sea glide.
Also, I have a tiny base with a scanner room in the center of the cave, and in both cases the scanner room was scanning for titanium (displayed on my hud).