Nobu Su is appealing against his prison sentence for contempt of court linked to his persistent failure to pay a $57m UK court award against him.

Separately, the Taiwanese ex-shipowner has filed another court document that makes fresh and colourful allegations of fraud, money laundering and even blackmail.

Su is appealing after the formal deadline has passed, so must first gain the courts' permission to appeal the committal order, which sentenced him to 21 months in prison on March 29.