Rising crude supply from OPEC+ and South America and a marked increase in longer-haul routes have hiked freight rates for supertankers, the so-called very large crude carriers (VLCCs) capable of transporting up to 2 million barrels of oil, to levels last seen nearly three years ago. Tanker owners and shipbrokers expect the strength in the supertanker market to spill over to smaller-sized vessels such as Aframaxes and Suezmaxes and continue into the fourth quarter of the year. In recent weeks, VLCC rates on the benchmark Middle East-to-China route…