Referring to the illustration pertaining to the semiautomatic navigation light panel circuit, if the buzzer sounds and the masthead indicator light comes on, what statement is true concerning acknowledging and responding to the alarm while minimizing the danger to navigation? EL-0108

Correct Answer: Option A — The buzzer is immediately silenced by turning the masthead transfer switch in the line section to the secondary lamp position. The masthead light will then immediately illuminate.

Switching the masthead transfer switch to the secondary lamp position isolates the failed primary filament, clears the audible alarm signal, and immediately energizes the reserve navigation light circuit, ensuring continuous navigational safety compliance under international lighting rules.