One way to get there, fast
Lose control into a spiral dive due to a loss of instruments, go near sonic in the descent, come out of the overcast and be able to see the water and even the horizon what with lightning and/or the moon, roll to wings level, and pull really, really hard. If the flight control system will let you apply full-up elevator regardless of the angle of attack or g, the outcome could be that you hit the water wings level, nose up, and at a relatively low forward speed but with an unsurvivable rate of sink.