Question 143Navigation General

The correct answer is C) green squares. The starboard side of a channel when going towards the sea is marked with green square daymarks, as per the U.S. Aids to Navigation System. This system is used to mark navigable waterways and channels, with green squares indicating the starboard side of the channel. The other options are incorrect because red triangles (A) and red squares (B) are used to mark the port side of a channel, while green triangles (D) are not a standard daymark in the U.S. Aids to Navigation System.