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AAT is austin aeromarine, inc

It looks like the company went out of business sometime in the mid to late 80's. They made go fast hydroplanes. The boats they made don't look like Boston Whalers. They also had some high speed race boats they were trying to break the speed records with as well. Here is an example of the boats they sold.

http://www.boatracingfacts.com/forums...-crossflow

I would guess someone swapped ID plates. I wouldn't be surprised if that boat is stolen. Personally, I would try to return the boat to the previous owner.

Can you take some pictures of the front or side profile of the hull to see if it looks like a 15' Whaler? The interior floor looks much like 15's? Does it seem like a foam file boat?