Question 49

The Correct Answer is D **Explanation for Option D (One prolonged and two short blasts):** The scenario describes a **sailing vessel** navigating in **fog**. According to the **COLREGs** (International Regulations for Preventing Collisions at Sea), Rule 35 outlines the sound signals for vessels in restricted visibility. A power-driven vessel making way through the water is required to sound one prolonged blast (Option A). However, a sailing vessel, regardless of whether it is operating under international or inland rules (as specified in the question), is categorized as a "vessel not under command, restricted in her ability to maneuver, a sailing vessel, a fishing vessel, and a towing or pushing vessel" for the purpose of fog signals when compared to a standard power-driven vessel. The required signal for a **sailing vessel** is **one prolonged blast followed by two short blasts** (— • •), sounded at intervals of not more than two minutes. **Explanation of Incorrect Options:** * **A) One prolonged blast:** This signal is required for a **power-driven vessel** (engine running) making way through the water in fog. It is not the correct signal for a sailing vessel. * **B) Two prolonged blasts:** This signal is required for a **power-driven vessel** in fog that is stopped and not making way through the water (e.g., drifting or at anchor and maneuvering to haul up). It is not the signal for a sailing vessel. * **C) Three short blasts:** This signal is a maneuvering and warning signal used by a power-driven vessel when in sight of another vessel and is used to indicate that the vessel is operating astern propulsion (reversing). It is not a fog signal.