Iran has released a new map asserting sovereign control over the Strait of Hormuz, intensifying the closure of the strategic waterway [1, 2].

This move escalates regional tensions and threatens the safety of thousands of mariners trapped on ships. The assertion of control complicates international efforts to maintain free navigation through one of the world's most critical oil transit chokepoints.

The map was unveiled May 22, 2024 [2]. This action follows a naval blockade that began April 13, 2024 [3], which has forced significant changes to commercial shipping routes. According to Centcom, 100 commercial vessels have been redirected since the blockade was launched [3].

The humanitarian impact of the closure is severe. Approximately 20,000 seafarers are currently stranded in the Strait of Hormuz [4]. These mariners face a combination of exhaustion, isolation, and fears of missile attacks while trapped on their vessels [4].

The Strait of Hormuz serves as the narrow link between the Persian Gulf and the Gulf of Oman [1, 2]. By asserting sovereign control through the new map, Iran has heightened the risks for the crews of ships unable to exit the region. The prolonged closure has turned the waterway into a zone of significant hardship for the international maritime workforce.

Iranian officials said the map demonstrates the country's sovereign control over the strait [2]. However, the practical result of this policy is a deepening crisis for the thousands of sailors who remain unable to reach their home ports [1, 4].

Approximately 20,000 seafarers are currently stranded in the Strait of Hormuz

The unilateral assertion of sovereignty over the Strait of Hormuz signals a shift from tactical disruption to a formal territorial claim. By combining a physical naval blockade with a legalistic map, Iran is challenging the international norm of 'transit passage' in international straits. This creates a precarious environment where commercial shipping is no longer governed by international maritime law but by the discretion of the Iranian government, increasing the likelihood of long-term economic instability and humanitarian crises for crew members.