The New Zealand businessman who formerly headed Tonga's Shipping Corporation of Polynesia, John Jonesse, is one of a number of people charged with manslaughter by negligence over the sinking of the Princess Ashika.

The inter island ferry sank last August with the loss of 74 lives.

The report from a commission of inquiry into the sinking is to be presented to the King of Tonga next week.

During the inquiry in Tonga, Jonesse was suspended after he had been charged with perjury in relation to testimony he had given.

Tongan Court officials have told Radio NZ that a number of others are facing the charge of manslaughter, including the former skipper, Maka Tuputupu, and the acting director of the marine division, Viliami Tuipulotu.