Image: نورنیوز

US Navy Enforces Strait of Hormuz Blockade, Turns Back 10 Iranian Ships

17 April, 2026.USA.20 sources

Key Takeaways

U.S. Central Command says the blockade is fully implemented, halting most Iran sea trade.
Six to ten ships were turned back within the first 24–48 hours.
The blockade's scope risks global energy disruptions and broader economic ripple effects.

US Blockade Enforcement

The United States military has enforced a naval blockade of Iranian ports that CENTCOM says has completely halted economic trade.

“Tehran, Iran – Iranian authorities say a continued United States naval blockade in the Strait of Hormuz could end the current pause in fighting as mediators try to secure a diplomatic solution”

Al Jazeera

CENTCOM announced it had turned back 10 vessels during the first 48 hours.

Al Jazeera

Maritime tracking data showed at least three ships crossed the Strait of Hormuz, with some later reversing course.

The blockade is enforced beyond the strait, in the Gulf of Oman.

CENTCOM said it is being enforced impartially against all vessels of all nations.

Blockade Mechanics and Legal Questions

The blockade covers all Iranian ports but not the Strait of Hormuz itself, which is an international waterway.

Blockading an international waterway is illegal under maritime law.

Al Jazeera Centre for Studies

The US military can interdict ships tens of thousands of miles away.

The blockade force includes an aircraft carrier, amphibious assault ship, transport dock, dock landing ship, destroyers, and littoral combat ships.

The IRGC navy's small attack boats are designed for close confines, not open waters.

Diplomatic and Regional Reactions

Iran warned the US blockade could end the current ceasefire.

“The US military has claimed its blockade of Iranian ports has completely halted economic trade going into and out of Iran by sea since it came into force on 13 April”