For clues about how glutted the global diesel market remains, just look at the bizarre voyages being undertaken by tankers hauling the fuel.

One cargo of diesel got hauled all the way to Singapore from the Persian Gulf – only to be loaded onto a much bigger ship and taken back to the Middle East. Another tanker hauling the fuel to Europe from India abruptly changed course over the weekend and is now heading south toward the Cape of Good Hope and signaling West Africa.