AT NIGHT!
30 minutes prior to sundown and thirty minutes after sunup
The white navigation light located at the stern of a vessel is called the "stern light." It is part of a boat's navigation lighting system and is typically required to be illuminated when the vessel is underway at night or during periods of reduced visibility. The stern light helps other vessels determine the direction and orientation of the craft.
The navigation light on the port (left) side of a power-driven vessel is red. This red light is used to indicate the vessel's position to other boats and is visible from a distance. It helps ensure safe navigation and prevents collisions at night and in low visibility conditions.
A green light on a boat at night indicates the starboard (right) side of the vessel. According to the navigation rules, vessels are required to display different colored sidelights to help identify their direction and status. The green light is visible from a distance and helps other boats determine the course and orientation of the vessel, aiding in safe navigation and collision avoidance.
On a powerboat, the white navigation light is typically located at the stern, or rear, of the vessel. This light is positioned so that it is visible from behind the boat, ensuring that other vessels can detect its presence when approaching from the rear. It is part of the required navigation lights for nighttime operation, helping to indicate the boat's position and direction.
The navigation lights required on a vessel are determined by its size, type, and the conditions under which it operates, as outlined in the International Regulations for Preventing Collisions at Sea (COLREGs). Vessels are classified into categories such as power-driven, sailing, and fishing vessels, each with specific light configurations. Additionally, the operational context, such as whether the vessel is at anchor or underway, also influences the required lighting. Compliance with these regulations ensures safety and visibility on the water.
A vessel operator is required to use navigational lights from sunset to sunrise and during periods of restricted visibility, such as fog or heavy rain. These lights help ensure the vessel is visible to other boats and aids in preventing collisions. Additionally, specific regulations may vary by location, so operators should also adhere to local maritime laws regarding light usage.
The phrase "red-light returning" on a boat typically refers to a navigation indication that signals the vessel is returning to port or a safe harbor. It may also imply that the boat is approaching a channel or an area where caution is required, as indicated by red navigation lights. In maritime navigation, red lights generally signify that the vessel should be on the port side, guiding the way for safe passage.
Checking with the authorities in charge of the waters in which you will operate your vessel is ALWAYS advisable.
At night, a commercial vessel towing can be recognized by its distinctive navigation lights: it will display two white masthead lights vertically aligned, along with sidelights and a stern light. Additionally, the towing vessel may show a yellow towing light above the stern light. The towed vessel will typically exhibit a white light at the stern and may have sidelights if it is over 20 meters in length. Observing these light configurations is essential for safe navigation.
You are the stand-on vessel but should take precautions in case the other operator doesn't see you.
If you see green and white lights while operating a powerboat at night, you are likely encountering a vessel that is either underway or anchored. The green light indicates the starboard side of another vessel, while the white light can indicate either the stern of a boat or a navigation light. Maintain a safe distance and be prepared to alter your course to avoid a collision, as you are required to give way to the vessel displaying the green light. Always ensure your navigation lights are functioning and visible to enhance safety.
Stop or Give way