Naval Board of inquiry

ADF advised me that the records would be available via NAA.

There was a naval board of inquiry onboard HMAS Moresby alongside Darwin, Mid 1986.

The board was inquiring into the ditching of the ships Bell 206b Helo.

I was involved in an incident during the recovery of the aircraft.

I can provide the date time and the incident but this will only assist in providing evidence of involvement.

How do I get a copy of that board of inquiry or the relevant section ?