Question 48 GLI07 - OUPV

The Correct Answer is C **Why Option C ("One prolonged and two short blasts at two-minute intervals") is correct:** The fog signals required for various vessels are governed by the International Regulations for Preventing Collisions at Sea (COLREGs), specifically Rule 35 (Sound Signals in Restricted Visibility). * Rule 35(c) states that a **vessel engaged in fishing, when under way or at anchor**, shall sound at intervals of not more than two minutes, **one prolonged blast followed by two short blasts**. * This specific signal (prolonged, short, short) clearly identifies the vessel's nature (restricted in ability to maneuver, fishing, etc.) to other traffic in restricted visibility, regardless of whether the vessel is governed by International or Inland rules (as Inland rules generally harmonize with COLREGs for this type of operational status). **Why the other options are incorrect:** * **A) A rapid ringing of the bell for five seconds at one-minute intervals:** This is the signal for a vessel **at anchor** of 100 meters or more in length. It does not apply to a vessel engaged in fishing (which requires the signal prescribed in Rule 35(c)) unless the fishing vessel is also at anchor and greater than 100 meters, which would be rare, and even then, the signal in 35(c) is the primary requirement for fishing vessels. * **B) One prolonged and three short blasts at two-minute intervals:** This signal (prolonged, short, short, short) is the required signal for a **towing vessel** (a vessel engaged in towing). It is not the signal for a vessel engaged in fishing. * **D) A sounding of the bell and gong at one-minute intervals:** This signal is required for a vessel **at anchor** that is **100 meters or more in length**, where the bell is sounded forward and the gong is sounded aft. It does not apply to a vessel engaged in fishing (Rule 35(c)).