Question

When encountering another vessel in darkness or reduced visibility, what do visible red and green lights indicate?

Answer 1

When encountering another vessel in darkness, the visible white, red and green lights indicate you are approaching a powerboat head-on.

In this case neither vessels has the right of way. Both boat operators must take early action to stay out of the way for other vessels. The operators must reduce their speed and steer to starboard.  

Further Explanation

The visible white, red and green lights are all navigation lights with different purposes. However, the four common navigational lights are sidelights, sternlight, Masthead light and all-round white light.

Sidelights are also referred to as combination lights. It is the combination of red and green light and visible to another vessel that approaching head on or from the side. The green light is the boat starboard (right hand side) and the red light is the port side (left) of a vessel.

The sternlight is the white light seen from behind the vessel.

The masthead light is a white light. The white light shines forward to all sides of the vessels. It is on all power driven vessels.

All-round white light is a white light used to combine sternlight and masthead light to form a single white light so that it can boldly be seen by other vessels.

LEARN MORE:

• navigational lights brainly.com/question/4603065

KEYWORDS:

• boat
• head-on
• masthead light
• white light
• operators

Answer 2

Answer: Option (B)

Explanation: The green light and the red light plays a very important role in sailing on a vessel at night. The red light is present on the left and the green light is present on the right.

The red light refers to the port side of the boat whereas the green light refers to the starboard side of the boat.

Both this lights are used for communication between the sailors. It means that when there is the indication of this two lights, it depicts that there approaches a head-on sailing vessel and one should side past the other, giving a passage for another vessel to move without collision.

Thus, the correct answer is option (B).