A green sidelight must be visible to boats approaching from the right (starboard) side. This is part of the navigation rules that help mariners determine the direction of another vessel's movement. The green light indicates that the vessel is facing the observer's left side, meaning it is navigating towards them.
When operating a powerboat at night, your red sidelight must be visible to boats approaching from the port (left) side. This is important for indicating your vessel's orientation and direction of travel to others. Additionally, your green sidelight on the starboard (right) side should be visible to boats approaching from the starboard side. Proper visibility of these lights helps prevent collisions and ensures safe navigation.
If you are operating a powerboat at night your green side light must be visible to boats approaching over an arc of the horizon 112.5 degrees and so fixed as to show the the light from right ahead to 22.5 degrees abaft of the beam on its respective side.
You are approaching a powerboat head-on
The red light should be on the right side, or port side, of the boat. The green light should be on the left, or starboard, side of the boat.
You are approaching a sailing vessel - head-on
You are approaching a powerboat head-on
You are approaching a powerboat head-on
You are approaching the starboard side of another vessel
you are approaching head on.
When approaching a flashing green light in Canada, drivers should proceed with caution and yield to pedestrians and other vehicles as necessary.
it tells you the boat is approaching you head on