Question 7 UFV01 - Master - Uninspected Fishing Vessels

The Correct Answer is C **Explanation for C being correct:** Option C ("You may sound at least five short and rapid blasts on the whistle") is correct because it addresses a situation of doubt as to the intentions of the other vessel. According to the **International Regulations for Preventing Collisions at Sea (COLREGs)**, specifically **Rule 34(d)** (Maneuvering and Warning Signals), when vessels are in sight of one another, if either vessel is in doubt as to the intention of the other, or is concerned whether sufficient action is being taken by the other vessel to avoid collision, that vessel **shall** indicate such doubt by giving at least **five short and rapid blasts** on the whistle. While the scenario mentions Rule 9 (Narrow Channels), the action taken due to doubt about intent falls specifically under Rule 34(d). **Explanation for why other options are incorrect:** * **A) You must sound one prolonged and two short blasts:** This signal is defined in **Rule 34(e)** and is used for vessels approaching a bend or an area where other vessels may be obscured. It is not the signal used to indicate doubt about another vessel's intentions. * **B) You should sound one short blast to indicate that you are holding course and speed:** A single short blast (**Rule 34(a)(i)**) indicates "I am altering my course to starboard." Sounding signals related to course alterations or holding course only apply when you are actually executing a maneuver or confirming intentions in situations where maneuvers are expected. Since you are specifically *in doubt* about the other vessel's intentions, using a maneuver signal prematurely or inaccurately would violate the rules and increase confusion. * **D) You are required to back down:** While taking early and substantial action to avoid collision is required (**Rule 8**), immediately backing down is a drastic maneuver and is not the *required* action to address initial *doubt*. The primary required action for doubt about intentions is the danger signal (five short blasts), which precedes or accompanies necessary maneuver action if the doubt persists or danger becomes imminent.