F1H2O

Q1: All boats may run laps at any time during the first 20 minutes of the hour. At the end of the first 20 minutes, only the fastest 15 boats will remain in the water, the excluded boats will fill the final five grid places.

Q2: After a seven-minute break, the times will be reset and the 15 remaining boats will then run in a 15-minute session - again they may complete as many laps as they want at any time during that period. At the end of the 15 minutes, the five slowest boats drop out and fill places 11 to 15 on the grid.

Q3: After a further eight-minute break, the times are reset and a final 10-minute session will feature a shootout between the remaining 10 boats to decide pole position and the starting order for the top 10 grid places. Again, these boats may run as many laps as they wish.

If a driver is deemed by the officials to have stopped unnecessarily on the circuit or impeded another driver during qualifying, his times may be cancelled
No refuelling allowed during timed trial.