Vale’s VLOCs could cause a “catastrophic” pollution incident if one ran into trouble, the Chinese Shipowner’ Association has warned.

Its latest broadside at the Brazilian miner’s giant bulkers comes a week after STX Pan Ocean’s 400,000-dwt Vale Beijing developed a leak prior to its maiden voyage.

"Such mega ships have been newly built ... and it is not yet certain whether they can withstand various sea conditions," the association said in an email to Reuters.

"If