True Life Navigational Maps

[hunter301]

Originally Posted by Sniper297

I suspect they made the destroyers ignore the fathometer ping because of necessity to use the fathometer, since you look at a chart that says 70 feet you have to subtract 15 to 17 feet on the surface or 50 to 66 feet submerged depending on what sub type and what depth you're running at - after all, the actual depth minus the keel depth is the issue, zero depth under keel is where you actually hit the bottom.

Where does your depth gauge show relative to your sub?
From the water line or from the keel?
Is your depth gauge already calculated for your draft?