Question 27

The Correct Answer is C ### Why Option C is Correct: This scenario describes a power-driven vessel engaged in pushing ahead or towing alongside (a composite unit or a tandem tow arrangement) specifically on the Western Rivers, *above* the Huey P. Long Bridge (mile 106.1 AHP). This region falls under the **Inland Rules** (specifically 33 CFR Subchapter E, Inland Navigational Rules). The lighting requirements for pushing ahead or towing alongside (except when towing astern) on the Western Rivers are governed by **Inland Rule 24(c)** (33 CFR 83.24(c)), which modifies the general towing light requirements for this specific area and operation. **Inland Rule 24(c)** states: > "A power-driven vessel when pushing ahead or towing alongside, except as provided in paragraphs (a) and (b) of this Rule [which cover towing astern or pushing/towing on waters other than the Western Rivers or Mississippi River above Head of Passes], shall exhibit **sidelights** and **two towing lights** in a vertical line." Therefore, the required configuration is **sidelights and two towing lights**. ### Why Other Options Are Incorrect: **A) one masthead light, sidelights, and stern light** * **Incorrect:** This configuration is generally reserved for small power-driven vessels (less than 50 meters, not towing) or vessels towing astern only on the Western Rivers. For pushing ahead/towing alongside on the Western Rivers, masthead lights are specifically *not* required, and a stern light is replaced by two towing lights. **B) two masthead lights, sidelights, and stern light** * **Incorrect:** This configuration is typically for larger power-driven vessels (50 meters or more, not towing) or vessels engaged in towing astern (which requires masthead lights appropriate for the length of the tow, plus a stern light/towing light combination). For the specified operation (pushing ahead/towing alongside on Western Rivers), the use of masthead lights and a single stern light is superseded by the specific requirements of Rule 24(c). **D) two masthead lights, sidelights, and two towing lights** * **Incorrect:** While this arrangement includes the required sidelights and two towing lights, it erroneously includes two masthead lights. Inland Rule 24(c) explicitly requires only sidelights and two towing lights for vessels pushing ahead or towing alongside on the Western Rivers, thus omitting the requirement for white masthead lights seen on standard tows in other areas.