More than 60 Australian coal-carrying ships kept waiting to unload off ports in China

Labor presses Coalition to explain what it knows about delays as pricing agency says Beijing appears to be singling out' Australian imports

More than 60 ships carrying Australian coal have been stranded at sea - some for months - while waiting to enter Chinese ports, according to analysts, with the Morrison government being urged to clarify the long delays.

Dozens of vessels are being kept waiting, according to the global commodity and energy price reporting agency Argus, which has been tracking the situation.