Which lighting configuration would you expect for a tug pushing a barge ahead at night when it is not a composite unit?

Which lighting configuration would you expect for a tug pushing a barge ahead at night when it is not a composite unit?

• A. A Stern White Light Only
• B. Two Towing Lights
• C. No Lights Required
• D. A Flashing Amber Beacon

Answer: (B)

When a tug is pushing a barge ahead and they’re not a single composite unit, the tow configuration must be clearly signaled at night. The proper signal is two white towing lights displayed in a vertical line at the stern. These lights tell other vessels that the tug is actively towing (or being towed) and that extra caution is warranted around this arrangement. The normal stern light helps with visibility, but it doesn’t communicate the towing operation by itself. A flashing amber beacon isn’t the standard indication for towing, and having no lights would leave other vessels unaware of the tow, creating a safety risk.

When a tug is pushing a barge ahead and they’re not a single composite unit, the tow configuration must be clearly signaled at night. The proper signal is two white towing lights displayed in a vertical line at the stern. These lights tell other vessels that the tug is actively towing (or being towed) and that extra caution is warranted around this arrangement. The normal stern light helps with visibility, but it doesn’t communicate the towing operation by itself. A flashing amber beacon isn’t the standard indication for towing, and having no lights would leave other vessels unaware of the tow, creating a safety risk.