He said a quick retrieval meant less diesel went into the harbour.
The Regional Council's vessels Kaha and Awanui both helped at the scene.
Vessel that has sunk at Salisbury Wharf in Pilot Bay. Photo / Supplied
The Bay of Plenty Times understands the owner of the boat suffered a medical event, tied up his boat at the wharf before being taken to hospital this morning.
However, the boat began taking on water this morning and started to sink.
A staff member at Mount Ocean Sports Club said it was a "little old boat" which had been at the wharf for a couple of weeks.
"The bad weather from last night must of got in. There is also a oil film on top of the water."
Vessel that has sunk at Salisbury Wharf in Pilot Bay. Photo / Supplied
A police spokeswoman said they were notified of an incident in the harbour about 6.40am.
It had appeared the boat had broken its mooring and taken on water, she said.