KEY POINTS
  • Six oil tankers and a U.S. spy drone have been attacked since May either in, or near, the Strait of Hormuz — a strategically important waterway which separates Iran, Oman and the United Arab Emirates.
  • "Insurance to transit the Strait of Hormuz has actually increased 10-fold in the last two months as a consequence of the attacks," Anthony Gurnee, CEO of Ardmore Shipping, told CNBC's "Squawk Box Europe" on Tuesday.
  • Every ship needs various forms of insurance, including annual war-risk cover as well as an additional 'breach' premium when entering high-risk areas.
Iranian soldiers take part in the "National Persian Gulf day" in the Strait of Hormuz, on April 30, 2019.

Insurance rates for tankers transiting through the world's most important oil choke point have skyrocketed in recent weeks, according to the CEO of a U.S.-listed shipping company.

Six oil tankers and a U.S. spy drone have been attacked since May either in, or near, the Strait of Hormuz — a strategically important waterway which separates Iran, Oman and the United Arab Emirates.