Question 35 GLI04 - Mate of LT 500-1600 GRT

The Correct Answer is A **Why Option A ("one prolonged blast") is correct:** The Inland Navigational Rules (specifically Rule 28) govern signals for vessels operating on the inland waters of the United States. Rule 34(d) specifies that when a power-driven vessel is leaving a dock or berth, it is required to sound **one prolonged blast** (a prolonged blast is defined as a blast of 4 to 6 seconds duration). This signal is necessary to warn any approaching or nearby vessels of its departure and maneuvering. **Why the other options are incorrect:** * **B) four short blasts:** Four short blasts is the danger signal, used when vessels are approaching each other and either vessel fails to understand the intentions or actions of the other, or when disagreement arises regarding the agreed-upon maneuvering. It is not the signal for leaving a dock or berth. * **C) one long blast:** While "prolonged" and "long" are sometimes used interchangeably in common speech, the official term in the Inland Rules is "prolonged blast." In some regulatory contexts (like bridge opening signals), a true "long blast" may be defined differently, but the specified sound for leaving a dock is the *prolonged* blast (4-6 seconds). * **D) no signal is required:** A signal is required for safety and compliance with Rule 34(d). Leaving a dock or berth is a maneuver that creates a risk of collision, necessitating the warning signal.