Its latest tanker market update said that 1.525bn deadweight tonnes of the combined crude and products fleet over 25,000-dwt is in the hands of public shipowners.

By contrast, 3.337bn dwt is owned by private shipowners, oil companies or traders, although a small number of those, such as BP, do have a stock listing. 

The breakdown is similar on the newbuilding front with 282 million dwt of tankers booked now controlled public shipowning companies, the shipbroker said in a report.