At 9am the oil slick was heading for the mainland. Transport minister Steven Joyce believed the slick wouldn't arrive till Wednesday, but our pilot said by lunchtime today it would be at the shoreline.
Around 1700 tonnes of oil are on board. We found slithers of it stretched out between Motiti Island and Tauranga.
By lunchtime on Mt Maunganui beach big blobs of oil could be found. It's gooey and thick, and this is just the beginning
Our pilot was right - oil had reached the beach by midday. So how could officials get it so wrong?
Good question.
Prime Minister John Key said they'd be 500 defence personnel standing by to clean up, but we saw not one.
The globules of oil are drifting ashore suspended in the water by the dispersant Corexit.
It was used in the Gulf of Mexico oil spill and after reports of skin irritation and respiratory problems authorities were forced to identify what Corexit is made of.
The answer is a combination of chemicals used in household cleaning products, skincare and air fresheners but the toxicity levels are being seriously debated.
Watch the video for the latest.