Iran said the key sea passage, through which about 20 percent of the world's oil and liquefied natural gas (LNG) passes, cannot be reopened due to apparent ceasefire violations by the United States and Israel.
Speaking to the BBC's Today programme, Tim Wilkins, chief executive of tanker companies' association Intertanko, described how the closure had left seafarers stranded off the coast of Iran.
Wilkins explains that there are high levels of anxiety, stress and fatigue on ships, while crews have to manage basic supplies like food and water, as well as practical tasks like waste removal.
"Many are stuck on the ship with no certainty when they will be able to return home," he added.
Despite a ceasefire agreement between Iran and the United States, clashes have continued in the region's waterways. Iran said last week it had seized two cargo ships in the strait for inspection, while other ships have reported attacks while trying to pass through the strait.
Meanwhile, the US has intercepted multiple ships after imposing a blockade on maritime traffic entering and leaving Iranian ports on April 13.
