Question 44 GLI03 - Master-LT 500-1600 GRT

The Correct Answer is D 1. **Explanation for Option D (Correct):** The signal of three short blasts (short blast defined as about one second duration) is prescribed by both the International Regulations for Preventing Collisions at Sea (COLREGs, Rule 34(a)(iii)) and the Inland Rules (Rule 34(a)(i)). This maneuvering and warning signal specifically means, "My engines are going astern" (i.e., the vessel is backing up or using its engines to stop its forward momentum). Therefore, Vessel "A" is backing engines. 2. **Explanation of Incorrect Options:** * **A) Vessel "A" intends to hold course and speed:** This action does not have a dedicated whistle signal. When vessels are crossing, the stand-on vessel (which typically holds course and speed) does not sound a whistle signal just to confirm its intent unless it is taking action to avoid collision or signaling doubt/danger. * **B) Vessel "A" is sounding a signal of doubt:** The signal of doubt or danger is five or more short blasts (Rule 34(d) and Inland Rule 34(c)). Three short blasts is a specific maneuvering signal, not a signal of doubt. * **C) Vessel "A" proposes to cross ahead of the other vessel:** A proposal to cross ahead (or a proposal for any intended maneuver) requires one short blast ("I intend to leave you on my port side") or two short blasts ("I intend to leave you on my starboard side") when operating in a narrow channel or during meeting/crossing situations where conventional whistle signals are used for passing arrangements (primarily under Inland Rules or certain circumstances internationally, though the primary crossing signal internationally is the danger signal if action is necessary). Three short blasts relates only to engine movement astern.