You dig calculated depth, make sure its correct! The best way to verify if to take a tape measure out to your boat and tie off to cutter head. Lower to head to known depth and match up with what HYPACK …

In the Chart Datum box is the zero base level of the pond. The HYPACK software now understands that the MSL Chart Datum Level of 2800 feet is to be added to the depth of the project. The matrix was …