Go around on either side is the action that is required of Boat A while overtaking Boat B in darkness or reduced visibility.
3 seconds of rapid bell ringing
give way to the starboard side
maintain course and speed
Give-way to starboard side
When a powerboat approaches a sailboat on its starboard side in darkness or reduced visibility, it must take care to maintain a safe distance and reduce speed to avoid collision. The powerboat should also ensure that its navigation lights are illuminated and clearly visible. Additionally, it is important to sound an appropriate signal to alert the sailboat of its presence and intentions. Finally, the powerboat operator should be prepared to take evasive action if necessary.
The overtaking vessel must always give way. Therefore the powerboat must be prepared to stop or change direction - the sailboat has right of way.
In an overtaking situation at sea, the "stand-on vessel" is the ship that has the right of way and should maintain its course and speed. The other vessel, known as the "give-way vessel," is required to take action to avoid a collision by altering its course or speed. It is crucial for the stand-on vessel to remain vigilant and aware of the give-way vessel's actions, as it still needs to be prepared to avoid an accident if necessary.
DOGS
When approaching the starboard side of a sailboat in reduced visibility, the powerboat should reduce speed to allow for better maneuverability and reaction time. It should maintain a lookout for navigational lights and shapes to determine the sailboat's position and heading. Additionally, the powerboat should sound the appropriate signals to alert the sailboat of its presence and ensure safe passing. Lastly, the operator should be prepared to take evasive action if necessary to avoid a collision.
Superogatories are actions that are commendable, but are not required. Duties are required and assigned actions.
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.
When overtaking another power-driven vessel, you should ensure that you have a clear understanding of the other vessel's course and speed. Use sound signals to indicate your intentions, typically one short blast to indicate you're altering course to starboard. Maintain a safe distance and speed to avoid collisions, and always keep a lookout for any potential hazards. Finally, ensure that your overtaking maneuver is completed safely and promptly, returning to your original course once clear.