That crash looks like a relatively low-speed one. A ship falling all the way from space would probably create a drastically different-looking impact mark in reality, but we can forgive Hollywood for that. Yet a ship falling from space would be unlikely to hit San Francisco Bay rather than some other random area of the Pacific or of dry Californian land. Do starships in nuTrek regularly operate from the surface of Earth, perhaps? Or does the protecting of SF Headquarters from anticipated threat routinely involve lowering a starship or three to rooftop level?
To me, it looks like the ship is actually being dragged across the surface of the water. If it were an uncontrolled crash, I would think that at that angle the saucer would dig into the water pretty quick.