A 14-foot boat operating under oars after dark must show what color light to avoid collisions?

A boat operating under oars after dark is required to display a white light to indicate its presence to other vessels and avoid collisions. The white light serves as a critical signal in low visibility conditions, making the vessel more visible to others on the water. This requirement aligns with navigation rules that stipulate the need for specific lighting to ensure safety during nighttime operations.

Other colors such as red or green are typically used to indicate the position of powered vessels or their direction of travel. Blue lights are not standard for displaying the status of non-motorized vessels and may not effectively communicate the necessary information to avoid collisions in the dark. Therefore, the use of a white light ensures compliance with safety regulations and enhances visibility for the protection of everyone on the water.