Not only do the Iranians control the Strait, they've turned it into a racket.
Vessels have been tracked passing between Qeshm and Larak, presumably for visual inspection, instead of through the main track of the Strait of Hormuz.
... More than 20 vessels of over 10,000 dwt have thus far made the detour, which goes between Iran’s Qeshm and Larak Islands. ...
More.

