Question 41 TV03 - Towing Vessels - Western Rivers

The Correct Answer is C ### Why Option C ("all-round white or yellow light") is Correct Inland navigation rules (governed by the U.S. Inland Navigational Rules Act of 1980, which aligns closely with international standards but has specific inland modifications) dictate the requirements for a light used to signal passing intentions. Rule 34(b) specifies the signals for vessels proceeding under the Inland Rules. Rule 34(b)(i) states that vessels may supplement whistle signals with visual signals, and the light used for these visual signals must be an **all-round white or yellow light**, capable of being displayed at least 5 nautical miles. This specific combination (all-round and white or yellow) is mandated for passing signals on inland waters, making Option C the precise legal requirement. ### Why Other Options Are Incorrect **A) all-round white light only** This option is incorrect because, while a white light is acceptable, the rule explicitly allows for either white **or yellow** light. Omitting the yellow light makes this option incomplete and less accurate than the comprehensive allowance provided in Option C. **B) alternating white and yellow light** This is incorrect. The signal light must be steady (displayed as specified by the sequence of flashes, but the light itself is a fixed color), not alternating colors. Furthermore, alternating or flashing lights are often reserved for specialized vessels (like law enforcement or air-cushion vessels) or distress signals, not routine passing intention signals. **D) alternating red and yellow light** This is incorrect for two primary reasons. First, the colors are wrong; the authorized colors are white or yellow. Second, the light should not be alternating (as explained in B). Red lights typically signify port side, towing operations, or are used in combination with white lights for stern or anchor lights, but not for passing intentions in this specific context.