You are approaching a powerboat head-on
You are approaching a powerboat head-on
You are approaching the stern of another vessel
You are approaching a sailing vessel - head-on
You are approaching the starboard side of another vessel
When a powerboat is approaching the starboard side of a sailboat in darkness or reduced visibility, it must maintain a safe distance and be prepared to take evasive action if necessary. According to navigation rules, the powerboat is considered the give-way vessel, meaning it should avoid interfering with the sailboat's course. The powerboat should also ensure that its navigation lights are clearly visible to indicate its presence to the sailboat.
The other vessel is coming directly toward the observer, so both the port and starboard running lights are visible.
The other vessel is coming directly toward the observer, so both the port and starboard running lights are visible.
When powerboat A approaches sailboat B in darkness or reduced visibility, it is required to exercise caution and take steps to avoid a collision. Powerboat A, being the give-way vessel, should reduce speed and maintain a proper lookout to assess the situation. Additionally, it must comply with navigation rules, which may involve altering its course to ensure safe passage around the sailboat, while also being aware of any sound signals that may indicate the sailboat's intentions.
A visible white light on another vessel indicates that it is approaching you head-on. This means you should also exhibit a white light to signify that your vessel is also approaching head-on.
You are approaching the stern of another vessel
In darkness or reduced visibility, visible red and green lights on a vessel indicate its orientation and direction of travel. A steady red light on the port (left) side and a steady green light on the starboard (right) side signify that the vessel is underway and facing the observer. If you see both red and green lights, it means you are approaching the bow of the vessel. If only one light is visible, it indicates the vessel's side, helping you assess its direction and take appropriate navigational actions.