The formula to calculate the Water Depth (D) is:
\[ D = L + B \]
Where:
Let's say the lift height (L) is 2 meters and the boat draft (B) is 1.5 meters. Using the formula:
\[ D = 2 + 1.5 = 3.5 \, \text{meters} \]
So, the water depth (D) is 3.5 meters.