Uncertainty swirling around tanker markets is making rate forecasts harder than ever, according to US shipbroker Poten & Partners.

Equivocation from Opec+, the Omicron variant and Iran nuclear talks are all contributing to a lack of clarity over sector prospects, the company believes.

Erik Broekhuizen, the company's manager of marine research and consulting, said: "This is not a good time to be a prognosticator.