Two men have died in a fatal marine incident north of Yeppon overnight.
Another boat discovered the vessel drifting near the mouth of Island Head Creek at Shoalwater around 11.30pm.
Water police attended, and preliminary inquiries indicate the boat has hit an object at speed and the two occupants have died as a result of the collision.
The two deceased men were located in the vessel and were the only people on-board.
The Sailfish 3000, a six metre aluminium catamaran, suffered significant damage to the front, below the water line.
Investigations are continuing.