Question 44 GLI05 - Master or Mate of LT 200 GRT

The Correct Answer is D **Explanation for Option D (Correct Answer):** According to the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 34(a) (Maneuvering and Warning Signals), a signal of **three short blasts** on the whistle means: "My engines are going astern" (I am operating astern propulsion). This signal is used to inform other vessels that the vessel is backing up or significantly reducing headway by reversing the engine direction. Therefore, "Vessel 'A' is backing engines" is the correct meaning of three short blasts. **Explanation for Incorrect Options:** * **A) Vessel "A" intends to hold course and speed:** This action does not require a specific sound signal under the maneuvering rules, unless it is a stand-on vessel using a danger or warning signal (five short blasts) due to the risk of collision. The signal for three short blasts specifically denotes reversing engines. * **B) Vessel "A" is sounding a signal of doubt:** A signal of doubt, or a danger signal, is indicated by at least **five short and rapid blasts** on the whistle (Rule 34(d)). Three short blasts has a distinct, defined meaning related to engine operation. * **C) Vessel "A" proposes to cross ahead of the other vessel:** Signals indicating intent to maneuver (like altering course to port or starboard in a meeting or crossing situation) involve 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) in restricted waters (Inland) or are typically required in passing/overtaking situations (International and Inland). Three short blasts specifically refers to reversing engines, not altering course to cross ahead.