Recent maritime incidents involving the interception of sanctioned vessels and naval skirmishes highlight the operational complexities of the 'shadow fleet' and the resulting geopolitical tensions.

近期涉及截擊受制裁船隻及海軍衝突的海上事件，凸顯了「影子船隊」在運作上的複雜性以及隨之而來的地緣政治緊張局勢。

The proliferation of the 'shadow fleet'—a network of vessels utilizing deceptive registration and tracking practices to transport sanctioned commodities—has accelerated following the imposition of Western economic sanctions on Russia and Iran. A 2024 study in Applied Sciences indicates that by 2024, this fleet expanded to approximately 1,100 vessels, employing tactics such as 'flag hopping,' the use of 'flags of convenience' from nations like Palau and Guinea-Bissau, and the disabling of Automatic Identification System (AIS) transponders to evade regulatory oversight. The Centre for Research on Energy and Clean Air estimated that 113 such vessels transported €4.7 billion of Russian oil in the first three quarters of 2025.

在西方對俄羅斯與伊朗實施經濟制裁後，「影子船隊」——即一個利用欺騙性登記與追蹤手段運送受制裁商品的船隻網絡——擴張速度加快。根據《應用科學》2024年的一項研究顯示，到2024年，該船隊擴張至約 1,100 隻船，採取的戰術包括「跳旗」（flag hopping）、使用來自帛琉與幾內比索等國家的「方便旗」，以及關閉自動識別系統（AIS）應答機以規避監管。能源與清潔空氣研究中心估計，2025年前三季，有 113 隻此類船隻運送了價值 47 億歐元的俄羅斯石油。

Institutional enforcement of these sanctions has led to direct kinetic and legal confrontations. In the waters off Oman, the United States executed strikes against three commercial tankers to enforce a naval blockade of Iran; these vessels exhibited characteristics of shadow operations, including OFAC sanctions and opaque ownership. Similarly, the United Kingdom has intensified its maritime security posture in the English Channel. Following the seizure of the Smyrtos—a vessel sailing without a registered flag—the UK has signaled a readiness to board non-compliant sanctioned ships. However, analysts suggest a distinction in escalation levels between intercepting stateless vessels and those flying a sovereign flag, such as the Russian-flagged Forwarder, which continues to transit the Channel despite international sanctions.

機構對這些制裁的執行導致了直接的武力與法律對峙。在阿曼近海，美國對三隻商業油輪發動襲擊，以執行對伊朗的海軍封鎖；這些船隻展現出影子運作的特徵，包括受到 OFAC 制裁以及所有權不透明。同樣地，英國在英吉利海峽強化了海上安全部署。在扣押了無登記旗幟的船隻 Smyrtos 後，英國表示準備登頂不合規的受制裁船隻。然而，分析師認為，截擊無國籍船隻與截擊懸掛主權國旗（例如儘管受到國際制裁仍持續穿梭於海峽的俄羅斯籍 Forwarder 號）的船隻，在升級程度上有所區分。

These systemic tensions have manifested in isolated tactical encounters. A recent incident involving the Russian frigate Admiral Grigorovich and a British civilian yacht, the Bright Future, underscores the volatility of the current maritime environment. While the Russian Defence Ministry alleged a 'dangerous approach' by the yacht, the vessel's occupants and the UK Ministry of Defence characterized the Russian vessel as drifting and out of control, describing the subsequent warning shots as unnecessary. This event occurred amidst a broader pattern of Russian naval assets potentially escorting sanctioned tankers to ensure the continuity of energy exports.

這些系統性緊張局勢體現在個別的戰術遭遇中。近期俄羅斯護衛艦 Grigorovich 號與英國民用遊艇 Bright Future 號之間的衝突，凸顯了當前海上環境的波動性。雖然俄羅斯國防部指控遊艇「危險接近」，但遊艇乘員與英國國防部將俄羅斯船隻形容為漂移且失控，並稱隨後的警告射擊是不必要的。此事件發生在俄羅斯海軍資產可能護送受制裁油輪以確保能源出口連續性的更廣泛模式之中。

The continued utilization of shadow fleets to bypass international sanctions has increased the frequency of maritime frictions and the likelihood of naval escalations.

持續利用影子船隊繞過國際制裁，增加了海上摩擦的頻率以及海軍衝突升級的可能性。