The process of deciding on a potential merger between Port Otago and Lyttleton Port of Christchurch is about to reach another stage.

An independent report looking into the proposed merger is to be in the hands of directors within the next week, however the contents of the report are to remain confidential.

Speaking to 9 Local News today, Port Otago CEO Geoff Plunket would not give an indication of Port Otago's intentions, but said the board would need time to consider the findings of the report.

In Lyttleton Port's annual report, Chairman Rodger Fischer was quoted as saying 'that amalgamation is crucial for the long-term viability of New Zealand ports'.