Which colors are common for daymarks?

Daymarks are navigational aids used to assist boaters in identifying specific locations, routes, and hazards on the water during daylight. The use of color and shape is standardized to ensure consistency and recognition among boaters.

The correct answer refers to the common color scheme of red triangles and green squares, which is vital for understanding navigational markers. In this system, red marks typically indicate the right side of the channel when entering from the open sea or heading upstream, while green marks signify the left side. This color-coding helps boaters navigate safely through various waterways and is part of the broader system of lateral markers used in navigation.

Daymark shapes also play a crucial role in identifying their function. The triangle represents a red marker, while the square represents a green marker. The combination of these colors and shapes provides an easily recognizable system that helps prevent confusion among boaters, promoting safety on the water.

Other options refer to color combinations and shapes that do not align with the established standards for navigational daymarks. Understanding the correct pairings is essential for safe boating practices and effective navigation.