GPS readings and average speed is 25 mph.  

N 25o 46.712' and W 80o 10.392' is Miami

N 23o o17.539' and W 82o 55.394' is near Havana, Cuba on Sunday at 8 am

N 23o 04.925' and W 83o o38.779' is going around Cuba pm Sunday at 10 am

n 20o 26.832' and W 83o 15.059' is midnight in the ocean pm Sunday night

N 19o 18.086' W81o 23.449' is Grand Cayman at 9 am on Monday morning