What is the purpose of the navigation lights on a boat?

The purpose of navigation lights on a boat is primarily to improve visibility in low light conditions. These lights help ensure that a vessel is seen by other boats, especially during nighttime or in poor weather visibility, which is crucial for preventing collisions at sea. Navigation lights follow specific color and placement standards, allowing other boaters to ascertain the direction in which a vessel is moving, as well as its type. For instance, a red light indicates port (left) side, while a green light indicates starboard (right) side, and a white light at the stern. This system of lights serves as a vital safety feature that helps maintain order and safety on the water.

The other options do not sufficiently cover the primary function of navigation lights. While lights may incidentally reflect a boat's size or ownership in specific contexts, their main purpose is to enhance visibility and promote safe navigation. Likewise, while decorative features may exist, they are not the intended function of navigation lights, which are purpose-built for safety and communication among vessels.