Question 38 GLI07 - OUPV

INTERNATIONAL ONLY Two power-driven vessels are meeting. What would a two-blast whistle signal by either vessel mean?

A "I am altering course to port"
B "I desire to pass starboard to starboard"
C "I desire to pass port-to-port"
D "I intend to alter course to port"
AI Explanation

The Correct Answer is A **Why Option A ("I am altering course to port") is correct:** The meanings of maneuvering and warning signals are defined in Rule 34(a) of the International Regulations for Preventing Collisions at Sea (COLREGs). According to Rule 34(a)(ii), when vessels are in sight of one another, **two short blasts** signifies: **"I am altering my course to port."** This signal confirms that the vessel is actively executing the maneuver. *** **Why the other options are incorrect:** * **B) "I desire to pass starboard to starboard"** * This is incorrect because the International Rules (COLREGs) do not use whistle signals to express a "desire" for a specific passing arrangement. The signals indicate the execution of a maneuver ("I am altering..."). Furthermore, two short blasts specifically denote an alteration to port, which is contrary to a starboard-to-starboard maneuver. (A single short blast means "I am altering my course to starboard.") * **C) "I desire to pass port-to-port"** * This is incorrect for the same reason as B: International Rules use signals to indicate the execution of an action, not the desire for a passing arrangement. While a vessel altering course to starboard (one short blast) often facilitates a port-to-port passage, two short blasts specifically signals an alteration to port. * **D) "I intend to alter course to port"** * This is incorrect. While the intent is obviously there, the specific wording used in the International Rules (Rule 34(a)) is "I **am altering** my course to port." This phrasing confirms that the action is currently underway or imminent, not merely a future plan.

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