The Ghost or Ghost Missing is a blue Predator police boat, without working guns, from Grand Theft Auto III. In a mission, Gone Fishing, you are tasked to destroy it. However, if you wait long enough, the driver will run ashore where you can kill him. If you do this you can shove the boat back in the water and drive it. It has no radio. Killing the driver who has commandeered the boat will cause the "Ghost" boat to explode with him, so it is recommended to obtain the boat and drive off to prevent him from shooting your boat.
When the boat is entered the name reads "GHOST missing" (probably due to the lack of the boat's name on the game's text file) on the PS2 version. In the Xbox version it is simply "Ghost".