An investigation is underway into the sinking of a Fiordland Jet commercial jetboat on the Waiau River, Maritime New Zealand says.

It happened on Tuesday afternoon, and Maritime New Zealand staff are talking to people, examining the vessel and the scene of the incident, reviewing documents and gathering information.

There were 13 people on board, including 11 passengers, a guide and the driver. No one was injured.

Once assessments are completed, it will decide if action will be taken.

Fiordland Jet did not want to comment.

Published by Permission