Occasionally I'm asked to explain how the "Lapse" time column in a race result is calculated
so, here goes!
Lapse Time is the True Lapse Time on Winner.
It is the time that a boat would need to shave-off its elapsed time in order to have the same corrected time as that of the winning boat in a race result.
Lets look at the following result for 2 boats, Boat A, the winner and Boat B.
The calculation and reasoning remains the same for any further boats.