研究人员Justin Hastings通过追踪朝鲜影子船队的运作揭示了这一隐秘产业的运营机制。1朝鲜通过关闭自动识别系统、改变船舶登记旗帜等手段，系统性地规避联合国制裁进行石油运输。12023年4月，一艘与朝鲜关联的油轮在东中国海关闭AIS信号系统十天后，重新出现在中国南方海域附近。1
影子船队得以长期活动的根本原因在于国际执法体系存在多重漏洞。1国际法对公海船舶的干涉设置了严格限制，而广阔海域的监管难度和拦截走私船舶的高昂成本与危险性，使得朝鲜及俄罗斯、伊朗等国能够持续规避制裁。1俄罗斯和伊朗已借鉴朝鲜开创的规避制裁手法，进一步扩大了这一产业的范围。1
Researcher Justin Hastings has documented how North Korea operates a sophisticated "shadow fleet" to evade United Nations sanctions and continue transporting oil internationally 1. The strategy involves disabling automatic identification systems on vessels, changing flags, and obscuring ship identities to mask illicit cargo movements 1. In one documented case from April 2023, a North Korean-linked oil tanker switched off its AIS signal in the East China Sea and reappeared near China's southern waters ten days later 1.
The effectiveness of these evasion tactics stems from several structural vulnerabilities in maritime law and enforcement 1. International law imposes strict limitations on interference with vessels on the high seas, creating legal obstacles to interception 1. The vast expanse of ocean territory remains difficult to monitor comprehensively, while the costs and dangers associated with intercepting smuggling ships discourage active enforcement efforts 1. Recognizing the success of North Korea's model, Russia and Iran have adopted similar sanctions-avoidance methods 1.
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