Question 270Navigation General

You are correct, the answer is B) passing daymark. A passing daymark is a navigational marker that indicates the proper side of the channel for a vessel proceeding downstream (descending the river). The green square marker with a green reflector border on the right bank would indicate that the vessel should pass to the right (starboard) side of the marker when traveling downstream. The other options are incorrect because: A) dredging marks are used to indicate areas of active dredging operations, C) mile boards are used to indicate river mile markers, and D) crossing daymarks are used to indicate the proper side to pass when crossing a channel.