Grand Theft Auto IV Glitches

Walk On Water
Go to the navy yard and climb up then ladder you see, until you can get off then walk to the side nearest the ship and jump off. You should reach the ship, if not try again. When you get on the ship, walk between the spaces in the middle of the containers and you might fall down into the sea near the big block to the front of the ship. When you do this you should be standing on the water.