4月13日下午，波斯湾和阿曼湾的船员们通过船舶间语音通讯的主要工具——海事无线电，听到了一条严厉的警告信息。
On the afternoon of April 13, seafarers in the Persian Gulf and the Gulf of Oman heard a stern warning broadcast over marine radio, the primary tool for voice communication between ships.
这段录音标志着美国海军对伊朗实施封锁行动的正式开始。据美国中央司令部统计，截至10月5日，此次封锁已迫使270多艘船只改变航向，另有近20艘船只被摧毁或丧失行动能力。为执行此次封锁任务，美国已投入数十亿美元用于相关海军行动，目前仍有约20艘军舰在相关海域执行任务，以拦截那些疑似曾在伊朗港口停靠的船只。
The audio marked the beginning of a monthslong American naval blockade, now in its second iteration, that has redirected more than 270 vessels as of Oct. 5 and disabled or destroyed almost two dozen more, according to U.S. Central Command. The U.S. has spent billions of dollars on naval operations related to the Iran war, including to maintain a presence of about 20 Navy ships to enforce the blockade of vessels the U.S. thought to have stopped at Iranian ports.