Question 46 GLI02 - Mate of Unlimited Tonnage

The Correct Answer is D Option D ("All of the above") is correct because the fog signal of **one prolonged blast followed by two short blasts** is mandated for a specific category of vessels under the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 35 (Sound Signals in Restricted Visibility), and equivalent Inland Rules. This signal is used by vessels that are **not able to comply with the standard movement rules** (like Rule 19 for restricted visibility) or are **constrained by their nature of operation** while underway or at anchor. Specifically, the vessels required to make this signal are listed in COLREG Rule 35(c): > "A vessel **not under command**, a **vessel restricted in its ability to maneuver**, a **vessel constrained by its draft**, a **sailing vessel**, a **vessel engaged in fishing** and a **towing or pushing vessel** shall, at intervals of not more than 2 minutes, sound **one prolonged blast followed by two short blasts**." Let's look at how the provided options fit this rule: * **A) A vessel restricted in its ability to maneuver, at anchor:** Although Rule 35(c) typically applies to these vessels while underway, Rule 35(g) specifically covers vessels restricted in ability to maneuver when **at anchor** and requires them to sound the signals in both 35(d) (the anchor signal) and 35(c) (the RAM/constrained vessel signal). Therefore, this option is included. * **B) A sailing vessel underway:** This is explicitly listed in Rule 35(c). * **C) A vessel not under command:** This is explicitly listed in Rule 35(c). Since all three scenarios (A, B, and C) require the fog signal of one prolonged blast followed by two short blasts, **D) All of the above** is the correct answer. *** **Why the individual options (A, B, and C) are technically incorrect as the sole answer:** While A, B, and C all describe vessels that *do* use this signal, selecting any one of them individually would be incorrect because the question asks which vessel(s) is/are required to sound this signal, and since multiple listed options apply, D is the only complete answer. If you selected only A, B, or C, you would be ignoring the other correct applications of the rule.