For a tug and tow of 200 meters or less, which light configuration is correct?

• A. Three White Lights
• B. White Over White
• C. Yellow Over White
• D. Red Over Red

Answer: (B)

When a tug is towing another vessel, you add a dedicated white light to warn other vessels that a tow is in progress. For a tow that is 200 meters or less, the towing lights are two white lights arranged vertically, one above the other. This “white over white” setup clearly signals to nearby vessels that a tow is underway and that the tug is actively engaging with the tow.

If the tow were longer than 200 meters, you’d use three white lights in a vertical line to indicate the extended tow; that distinction helps others gauge the situation based on how long the tow is.

The other options don’t fit this towing scenario: three white lights would indicate a longer tow, and the color combinations yellow over white or red over red aren’t the standard signaling for a tug and short tow in this case.