Question 28 MODU02 - Barge Supervisor

The Correct Answer is C ### Explanation for Option C (Special Flashing Light) The **Special Flashing Light (SFL)** is a light specifically mandated under the Inland Navigation Rules, particularly for vessels operating on the Western Rivers and certain designated waters (like the Great Lakes connecting waters). 1. **Identification of Vessel B:** If Vessel B is displaying the Special Flashing Light, it identifies Vessel B as a power-driven vessel pushing ahead or alongside. 2. **Positioning:** The Special Flashing Light (an amber light flashing at 50-70 flashes per minute) is displayed **forward** on the vessel. Because Vessels A and B are meeting (and passing 1/4 mile apart, meaning Vessel A has a clear view of Vessel B's forward profile and side), the SFL is positioned where it would be easily visible to Vessel A. This unique, mandatory inland light is therefore one of the lights Vessel A would certainly see. ### Explanation for Incorrect Options **A) yellow towing light:** The yellow towing light is located at the stern (above the white stern light) and shines primarily aft. In a meeting situation where Vessel A is viewing Vessel B's forward profile, the towing light would not be visible. **B) red sidelight:** The red sidelight covers the arc from the vessel’s port beam to 22.5 degrees abaft the beam. In a standard meeting situation on a river, vessels often pass port-to-port. If they are passing port-to-port, Vessel A would see Vessel B’s **green** (starboard) sidelight, not the red (port) sidelight. While the red sidelight might be visible if the angle is skewed toward a starboard-to-starboard passing, the visibility of the red sidelight is not guaranteed, whereas the forward-facing special flashing light is mandatory and easily seen in a meeting scenario. **D) All of the above:** Since the yellow towing light (A) is incorrectly positioned (aft) for visibility in a meeting scenario, this option is incorrect.