Question 186Navigation General

The correct answer is A) Color and shape. The color and shape of a daymark are the primary features used to identify the beacon upon which it is mounted. This is because daymarks are designed to be easily recognizable visual aids that allow mariners to quickly identify the type and location of a navigational aid, even from a distance. The color and shape provide distinct characteristics that distinguish one beacon from another, which is essential for safe navigation. The other answer choices are incorrect because the method of construction, size, and signal characteristics are not the primary identifiers used for daymarks. While these factors may be relevant for other aspects of navigational aids, they are not the defining features used to identify a daymark.