A Transport Accident Investigation Commission inquiry has been opened after a commercial passenger vessel grounded in Akaroa Harbour on Saturday.

The Commission is appealing for witnesses who saw, photographed or videoed the Black Cat ferry at the time of the incident.

The 17 metre vessel was carrying 38 passengers and 3 crew on a wildlife cruise when it grounded in Akaroa Harbour.

All people on board were evacuated to nearby vessels, with no injuries initially reported.

The ferry later began to list and was subsequently beached.

Chief Investigator of Accidents Louise Cook said the Commission was keen to hear from anyone who was on board the vessel or who witnessed the incident.

“Getting the facts straight is vital, so we are keen to hear as soon as possible from people who were on this vessel and anyone who saw the accident. We are particularly keen to receive videos or photographs,” she said.

A dedicated investigation team has been appointed and will travel to Akaroa as soon as practicable.

The early stages of the inquiry will focus on gathering evidence that could change or be lost, including physical material and witness accounts while memories remain fresh.

Over the coming days, investigators will seek to recover any wreckage where possible, secure electronic records including photos, videos and location data from cellphones, and interview witnesses.

The investigation will also examine the vessel, its history and type, performance, maintenance, equipment and design.

Cook said the Commission opens an inquiry when the circumstances of an accident are likely to have significant implications for transport safety, or when findings and recommendations could help improve safety outcomes.

Anyone with information is asked to contact the Transport Accident Investigation Commission by email at [email protected].