For towing vessels pushing ahead in inland waters, which light configuration is mandatory?

For towing vessels that are pushing ahead in inland waters, the mandatory light configuration includes two towing lights. This requirement is designed to ensure that the towing vessel is clearly identifiable to other vessels in the area. The two towing lights must be positioned vertically, and these lights indicate that the vessel is engaged in towing and provide crucial information about its operational status.

The presence of two towing lights enhances visibility and safety at night or in low visibility conditions, helping to prevent collisions. The use of sidelights or flashing lights does not meet the specific regulatory requirements for vessels engaged in towing operations. Therefore, the configuration with two towing lights is essential for compliance with navigation rules and for the safety of all vessels operating in inland waters.