Question 44

The Correct Answer is D. **Explanation for D (Vessel "A" is backing engines):** According to the International Regulations for Preventing Collisions at Sea (COLREGs) Rule 34(a)(iii), when vessels are in sight of one another, a maneuvering and warning signal consisting of **three short blasts** means: "My engines are going astern" (I am operating astern propulsion). This signal communicates the action Vessel "A" is taking, which is backing engines, often done to stop or reverse the vessel's movement relative to the water. **Explanation for Incorrect Options:** * **A) Vessel "A" intends to hold course and speed:** There is no specific whistle signal in COLREGs that means a vessel intends to hold course and speed. A vessel holding course and speed (the stand-on vessel) typically does not sound maneuvering signals unless taking action to avoid collision. * **B) Vessel "A" is sounding a signal of doubt:** A signal of doubt or warning (the 'danger' or 'doubt' signal) consists of **at least five short and rapid blasts**. Three short blasts have a specific, different meaning (backing engines). * **C) Vessel "A" proposes to cross ahead of the other vessel:** Signals indicating intent regarding meeting, crossing, or overtaking (e.g., intending to leave another vessel to port or starboard) utilize one or two short blasts, depending on the rules applicable (Inland or International) and the context (overtaking/crossing). Three short blasts specifically indicate backing engines, not proposing to cross ahead.