The prospect of fees to transit the Strait of Hormuz has sparked alarm, not least by investors who fear it could be replicated in other maritime corridors.

The Strait of Malacca is the world’s largest oil chokepoint in terms of transit volume, according to the US EIA.

Indonesia and Singapore vowed on Monday that the Strait of Malacca, a critical oil transit chokepoint in the region, will remain "accessible" even as Iran imposes fees on ships…