yellow over yellow is a inland towing fellow. this would be a inland towing vessel.
commercial vessel
At night the towing vessel should show two white lights on top of each other to indicate that it is towing.
yellow over yellow is a inland towing fellow. this would be a inland towing vessel.
A vessel that is towing another vessel should display yellow lights to indicate its activity. Specifically, the towing vessel must show a yellow towing light at the stern and may also display additional yellow lights to signify the length and nature of the tow. This lighting helps other vessels recognize the towing operation and ensures safe navigation in the vicinity.
A vessel may not exhibit two red lights in a vertical line when it is not engaged in towing operations or is not constrained by its draft. The display of two red lights typically indicates that a vessel is restricted in its ability to maneuver, such as when it is towing or fishing. If the vessel is operating normally or is not in a situation that restricts its movement, it should not show this signal. Thus, the absence of such lights is appropriate for vessels operating under normal conditions.
Inland or International? Pushing, pulling or pulling alongside? Inland Lights and Shapes Rule 24 (c) A power driven vessel when pushing ahead or towing alongside, except as required by paragraphs (b) and (i) Covers composite units) of this rule, shall exhibit: (iii) Two towing lights (yellow) in a vertical line. (i) Notwithstanding paragraph (c), on the Western rivers (except below the Huey P. Long bridge on the Mississippi River) and on waters specified by the secretary, a power-driven vessel when pushing ahead or towing alongside, excepts as paragraph (b) applies, shall exhibit: (i) sidelights; and (ii) two towing lights (yellow)in a vertical line.
Look for yellow lights.
Look for yellow lights.
Look for yellow lights.
White lights displayed above cabin
A commercial vessel towing at night displays a white towing light above the stern of the towing vessel and a second white light at the stern of the tow. Additionally, the vessel should show a green light on the starboard side and a red light on the port side, as well as an all-round white light at the stern of the vessel being towed. These lights help indicate the vessel's activity and ensure safe navigation for other vessels.
White lights displayed above cabin