What's that movie with the person frozen in time in a ship under the sea. Then some people find the ship open the door and the person pops out. That's all I really remember.

Your description makes me think of a scene from "Ghost Story" (1981) in which they haul the car out of the river. The door opens, and the woman who had been alive (in a way) emerges, collapses in the snow and finally dies~messily.

But, I can't think of a ship with that happening. Can you think of any other details?

Could it be Encino Man with Brendan Fraser?

Sounds a bit like,.

The Amazing Captain Nemo
a.k.a. The Return of Captain Nemo

Scuba divers discover Capt. Nemo's sub , the Nautilus
That was lost for over a century. Once inside they find
The legendary Capt. Nemo cryogenically frozen inside.

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