Boating license / I come across this Christmas tree offshore. What type of boat is it?

A boat approaches me. I can clearly make out its lights amid all the lights on deck. What can I deduce about the nature of the boat and its behavior? I've just passed it and it's moving away from me? Answer A. It's impossible to know where it's going because all the lights are on? Answer B. It's coming straight at me? Answer C. It's a motorboat over 50 m long and under way? Answer D.

Every week, we present you with a question about your boating license. Whether you're looking to validate your knowledge or discover new and unexplored areas. This week, we take a look at a question on ship's lights and markings.

Among the myriad of lights that can be distinguished in this situation, some serve as on-board lighting for life on the boat, while others are ship's lights and markers. For example, we can single out a red light and a green light, placed on each side, as well as two superimposed white lights.

Seen from the air, a motorboat over 50 m in length must show :

  • A masthead light at the front
  • A second masthead light behind and higher than the first
  • Red and green sidelights
  • A white stern light
Le même bateau en vue aérienne
The same boat in aerial view

The green and red lights indicate that the boat is coming towards us. We're exactly on course. If we were a little to one side, we'd see only one colored light, green or red, depending on the tack.

The two superimposed white lights indicate that this is a motorboat and that it is over 50 m long. The lower light is at the bow, while the upper one is at the stern.

For this boating license question, answers C and D had to be validated.

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