Oil-Tanker Glut Seen Rising With Returns Near Four-Year Low

A glut of the biggest oil tankers in the Persian Gulf expanded, a Bloomberg survey showed, adding to pressure on owners facing returns near the lowest level in at least four years.

There are 20 percent more very large crude carriers available for hire over the next 30 days than there are likely cargoes, according to a Bloomberg News survey of six shipbrokers and owners today. That’s an increase of 1 percentage point from last week and up 5 points compared with a year earlier, previous survey data show.