Wharves 2 and 3 will be rebuilt later.
The next phase will be the work of one of the project's partners, Q-West Boat Builders. The company aims to build a modern and environmentally responsible base for building and refitting large boats.
It will provide a 300 tonne-plus mobile hoist for moving vessels in and out of the water.
Q-West, which will occupy a central part of the port, will start demolishing the cement silos and adjoining buildings there next week, with demolition due to be finished in August.
"We are creating a world-class marine precinct which will be environmentally sustainable - which means none of the washdown activities from the boats will be pumped into the Awa," Albert said.
Another organisation in the project is the Whanganui District Employment Training Trust, the Te Pūwaha statement said.
It will create a port employment precinct (PEP) to train people and connect them with marine jobs.
"We are working to identify and collaborate with agencies, training and education providers, and other initiatives that facilitate current and future employment demands," PEP operations manager Craig Garner said.
New business ventures at the port are anticipated and it is expected to create more than 250 jobs in the coming years.
As the project proceeds, enhanced recreation opportunities are also expected.
Te Pūwaha project is happening under the Te Awa Tupua status of the Whanganui River. As well as Q-West, Whanganui District Council and Whanganui District Employment Training Trust, it involves Horizons Regional Council, central government, hapū and the community.
The total cost is more than $50 million. It includes a $26.75m investment managed by the Provincial Development Unit (PDU) with the rest covered by Whanganui District Council, Horizons Regional Council, Q-West Boat Builders and Whanganui District Employment Training Trust.