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误报警和遇险及安全的二次报警（海上安全委员会第1109号通告第一次修正案）；及
False security alerts and distress/security double alerts (MSC/Circ.1109/Rev.1); and
youdao
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误报警和遇险及安全的二次报警（海上安全委员会第1109号通告第一次修正案）；及
False security alerts and distress/security double alerts (MSC/Circ.1109/Rev.1); and
youdao