I drove a sealed APC into the ocean in editor and the vehicle instantly became flooded with water and engine was destroyed (im ok with that part though).

The vehicle also went straight to the bottom... I was traveling 100kmph so there should be several seconds at least of floating/crashing in water, lol

ALSO its extremely difficult to leave a vehicle underwater until the inside/outside pressures have equalized. If this is changed than the players should have to wait until the vehicle is mostly filled before they can leave (when it's fully submerged). {F17689}