Which is more general on the Straits of Hormuz:http://www.lowyinterpreter.org/post/...ing-about.aspx

Ends with this pointer to insurance premiums:
As an aside, there are a number of think tanks looking at the implications to world economies of conflict in the Straits, and while most agree that Iran's ability to close the Straits is limited to a few days, if at all, there has been some interesting work done on the increased insurance premiums (which would be passed on to the consumer) in the event of conflict in the Gulf (based largely on the medium intensity tanker wars mentioned previously). It makes the likely petrol price hike appear very manageable.