Hormuz, April 23: Iran Seizes Two Ships Hours After Ceasefire Extended. The Pentagon Says Mines Could Take Six Months to Clear.
Wednesday managed to get worse as it went on. In the early hours of the morning, President Trump extended the ceasefire with Iran indefinitely, citing a request from Pakistan and what he described as a 'seriously fractured' Iranian government needing more time to put together a unified proposal. By midday, Iran's Revolutionary Guard had attacked three commercial ships in the Strait of Hormuz and seized two of them. Brent crude briefly crossed $100 a barrel. By late afternoon, the White House had said the seizures did not violate the ceasefire, Trump had declared there was 'no time frame' on the conflict, and the Pentagon had quietly briefed lawmakers that clearing the Strait of mines after the war ends could take up to six months.
That last figure is the one that resets the planning timeline. Not the ship seizures, not the oil price spike, but the mine clearance estimate. It means that even in an optimistic scenario where the U.S. and Iran agree to terms this week, the Strait does not reopen for commercial shipping immediately. It reopens slowly, carefully, after a sustained mine-hunting operation. The Cape of Good Hope is not a temporary detour. For most of 2026, it is the route.
What happened on Wednesday
Iran's Revolutionary Guard attacked three commercial vessels in the Strait of Hormuz and seized two of them, describing the action as a response to maritime violations. UK Maritime Trade Operations confirmed the first attack at 8:38 a.m. London time, with no injuries and no vessel damage reported. The crew of that ship was safe. The two seized vessels were transferred to Iranian shores. Cargo and crew status was not immediately clear.
The seizures came hours after Trump announced the ceasefire extension, and U.S. Central Command said the same day that it has now forced 31 ships to turn back since the naval blockade of Iranian ports began. When asked whether Trump viewed the seizures as a ceasefire violation, press secretary Karoline Leavitt said no, because they were not U.S. or Israeli vessels. That framing is worth sitting with. The U.S. definition of what constitutes a violation is narrower than what most commercial shipping operators would recognize, and narrower than what Iran views as the terms of the ceasefire. That gap is part of why negotiations have not progressed.
Trump said in interviews on Wednesday that there is 'no time pressure' on the conflict and no 'firm deadline' for Iran to respond with a proposal. He described himself as satisfied with the economic pressure the blockade is creating. Treasury Secretary Scott Bessent posted that Kharg Island oil storage is nearly full and that Iranian wells will soon begin shutting in. U.S. officials said separately that Trump has given Iran three to five days to engage in talks before reconsidering military action. The Senate voted for the fifth time this year against a measure that would require congressional approval for future military action against Iran. The measure failed 46 to 51.
The mine clearance problem
The Pentagon's assessment, briefed to lawmakers on Wednesday, is that clearing the Strait of Hormuz of sea mines after the war ends could take up to six months. This is the most concrete public estimate yet of the post-war reopening timeline, and it is significantly longer than most market assumptions had priced in.
Iran laid mines in parts of the strait during the conflict, and Iranian officials have acknowledged that the location of some of those mines is uncertain. The IRGC also issued navigational guidance directing commercial vessels through specific approved corridors close to the Iranian mainland — a de facto acknowledgment that other parts of the strait are not safe to transit. The mine-hunting operation required to clear the waterway is not something that happens in the background while commercial traffic resumes. It happens before commercial traffic can resume.
The military planners from more than 30 nations meeting this week at a Royal Air Force base north of London are working on exactly this kind of coordinated clearance and escort framework. British defense officials have discussed deploying autonomous mine-hunting systems from motherships. The planning is real and serious. But the UK's defense ministry has been consistent that any deployment is contingent on what it calls a 'sustained ceasefire' — not the current arrangement, which both sides are actively violating.
Where negotiations stand after Wednesday
The second round of U.S.-Iran talks that was expected to take place in Islamabad this week has not happened. VP Vance was expected to lead the U.S. delegation, but the trip was put on hold after Iran's state news agency reported no decision had been made on attending further talks. Iran's president Masoud Pezeshkian said Tehran wants to continue negotiations but that U.S. 'breach of commitments, blockade and threats' are the main obstacles to genuine dialogue.
The core disagreements that have blocked a deal since Islamabad have not narrowed. The U.S. wants full reopening of the Strait of Hormuz, constraints on Iran's nuclear program, and limits on Iran's regional proxy network. Iran wants security guarantees against future military strikes, war reparations, international recognition of Iranian sovereignty over the Strait, and access to roughly $6 billion in frozen assets. It has also proposed charging shipping tolls on commercial transit through the Strait, a proposal that legal experts say would require broad international consensus and runs into complications under maritime law given Oman's treaty obligations on freedom of navigation.
Trump's open-ended ceasefire extension removes the deadline pressure that was one of the few negotiating levers the U.S. had. CNN reported that Trump's own advisers have privately warned him that an extension without a hard deadline allows Iran to drag out the process. Whether the three-to-five day window U.S. officials described on Wednesday functions as a soft deadline remains to be seen.
What this means for freight and supply chains
The freight situation as of today is materially worse than it was at the start of the crisis in late February, and the mine-clearance timeline makes it unlikely to improve substantially before the end of the year. Transpacific container rates to the U.S. West Coast are up roughly 40% from pre-war levels. East Coast lanes are up around 38%. Brent crude, having briefly crossed $100 on Wednesday, is trading just below that level and will influence the next wave of carrier surcharge announcements.
The emergency fuel surcharges that began on the ocean side in March have now expanded into inland and intermodal transport. ONE introduced a dedicated Inland Haulage Fee for the U.S. and Canada effective April 18. CMA CGM revised its ocean surcharge upward 77% within 11 days of its original filing. The surcharge stack — ocean EBS or EFS, inland haulage fees, war risk premiums, and GRIs — means that landed cost calculations built on ocean freight alone are likely underestimating total exposure by a meaningful amount. Review every line.
Any freight budget or Q3 planning model built on the assumption that Hormuz reopens before Q4 should be rebuilt. The Pentagon's six-month mine clearance estimate, combined with the current state of negotiations, means the earliest realistic scenario for commercial transit resumption is late Q4 2026, and that assumes a deal gets done in the near term. Analysts at multiple institutions are not projecting resolution before year-end. The Cape of Good Hope routing, with its added 10 to 14 days and elevated fuel costs, is the baseline for planning purposes through at least the end of 2026.
ShipTech's position
We are monitoring carrier surcharge filings, diplomatic developments, and routing changes every day. If you need a current view of how the full surcharge stack applies to your lanes, or want to model the landed cost impact of current conditions against your import program, reach out to your ShipTech account manager directly.