INLAND ONLY What do the lights shown in illustration D075RR below represent?
• Inland Rule 24 – Towing and Pushing (towing lights and how many yellow lights are used, and when) • Difference between pushing ahead / towing alongside vs towing astern lighting arrangements • How dredge or pipeline obstructions are marked (continuous vs vertical arrangement of yellow lights)
• Ask yourself: in Inland Rules, which towing situation uses two yellow towing lights in a vertical line rather than a single yellow light? • Would a pipeline or dredge normally be marked by lights in a straight line along its length, or by a stacked vertical pair like in the illustration? • For a tow astern, where is the yellow light placed in relation to the sternlight, and is there usually one or two yellow lights?
• Verify in Rule 24 (Inland) how many yellow towing lights are required for a vessel pushing ahead or towing alongside, and how they are arranged. • Check how many yellow lights mark the stern of a towing vessel when the tow is astern, and whether they are in a vertical pair or not. • Confirm that pipeline/dredge markings use multiple yellow lights spaced along the obstruction, not just a single vertical pair.
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