Assessment was carried out by teams from the government and the insurance company for the British-owned Caledonian Sky, which ran aground on coral reefs in West Papua's famous Raja Ampat archipelago.
The Jakarta Post quotes Indonesia's deputy for maritime sovereignty at the Office of the Coordinating Maritime Affairs Minister, Arif Havas Oegroseno.
He said the two teams concluded the ship damaged 18,882 square meters.
The damaged area has been divided into two categories: over two-thirds were "heavily damaged" while the rest suffered "medium damage".
