All you have to do to win this superb prize is guess how long it will take the SilverHook boat to power across the Straits of Florida from the Key West to Havana on 17 August.
Send your name, address and guess to email@example.com by midnight on Wednesday 16 August.
The winner will be the entrant who guesses the exact time of the crossing or who is nearest to that time.
In the event of there being more than one correct entry the winner will be randomly selected. Only one guess will be allowed per entrant.