The sale-and-purchase market is rife with speculation that the 49,000-dwt American Phoenix (built 2012) commanded more than $150m but the identity of the buyer isn't clear.

Observers believe the price tag, in part, reflects rising demand for tonnage capable of cashing in on the shale oil revolution and lack of unencumbered newbuilding slots at domestic yards like Aker Philadelphia.

In addition brokers note, upon conclusion of a charter with Koch, the vessel will be fixed to Phillips66 for up to five years in a deal that carries an initial day rate of roughly $75,000.

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