You are transiting the Straits of Mackinac by way of an improved channel. You have information which indicates that the channel's Federal project depth is 28 ft. Which of the following statements is true with regards to this channel?

Correct Answer: Option B — The design dredging depth of the channel is 28 ft.

Federal project depth refers to the design depth to which a channel is authorized to be dredged by the U.S. Army Corps of Engineers. It does not guarantee the current least depth, as shoaling or silting may occur between dredging cycles, making 'design dredging depth' the technically accurate definition.