Quote:
Originally Posted by gap
From your information I can finally desume that the substance they are consuming is seaweeds 
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This could be where sometimes when the game loads from the bunker - all the ships etc are loaded into the game. Here some ships can be loaded just a fraction off where they should be and thr ship hits the pier etc.
This can then cause the ship to leap in the air and destroy itself - leaving smoke as the only way to know there was even a ship there.