Question 27 ONC06 - Master LT 100 GRT

The Correct Answer is C ### Why Option C (sidelights and two towing lights) is Correct The scenario describes a power-driven vessel operating *inland only* (Western Rivers, above the Huey P. Long Bridge), specifically engaged in pushing ahead or towing alongside. According to the Inland Navigational Rules (specifically Rule 24 - Towing and Pushing), when a power-driven vessel is towing alongside or pushing ahead (except for a composite unit) on waters governed by the Inland Rules, it must exhibit: 1. **Sidelights** (required for any power-driven vessel underway). 2. **Two towing lights** in a vertical line instead of the usual stern light. *Note:* Unlike towing astern, vessels pushing ahead or towing alongside on the Western Rivers (and often elsewhere inland) do *not* display the masthead lights (either one or two). The display of the towing lights (two vertical yellow lights) serves to identify the vessel's stern during these operations. ### Why the 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) when *not* towing. Furthermore, when towing, a vessel must replace the stern light with towing lights. The vessel is also required to show two towing lights, not a single stern light, when pushing or towing alongside on the Western Rivers. **B) two masthead lights, sidelights, and stern light** * **Incorrect:** This configuration is typically for large power-driven vessels (50 meters or more) when *not* towing. When pushing ahead or towing alongside on the Western Rivers, masthead lights are not required, and the stern light is replaced by two towing lights. **D) two masthead lights, sidelights, and two towing lights** * **Incorrect:** This option incorrectly includes masthead lights. When pushing ahead or towing alongside on the Western Rivers (Inland Rules), the requirement is specifically **sidelights and two towing lights** only. (Two towing lights replace the stern light, and the masthead lights are omitted).