Our founder, Chris Sellner had been an avid boater for his whole life and had bought and sold numerous boats through his enjoyment of the boating lifestyle but was always troubled by the fact that not enough boat sales people were true boaters themselves and didn’t truly understand what a boater was looking for when it came time to purchase a new boat or a pre-owned boat, get boat service work done or even purchase simple boat accessories.

In 1992, Chris set out to create a better boat buying experience. He knew he had to surround himself with great people with tremendous product knowledge and a service staff with a depth of knowledge that, when a customer brought them a problem, they’d be able to fix it to full satisfaction every. single. time.

The other element he was looking for was location. Being located in Ayr, ON, allowed C.A.S. Power Marine Ltd. to be centrally located exactly where the majority of boaters actually live, southwestern Ontario. With it being a little over an hour from Toronto and less than an hour from places such as Hamilton, Kitchener, London and Mississauga, Ayr become the ideal spot in which to set up his new boat dealership.

In 2008, C.A.S. Power Marine Ltd. started to branch out from only selling used boats, motors and trailers into the new boat and outboard motor market. This is when we became a Suzuki Outboard motor dealer, took on Starcraft boats, Volvo Penta and became and authorized service and warranty center for Mercury and Mercruiser.

In late 2017, C.A.S. Marine made the move to a new location at 418 Harmony Road, which is still in Ayr and is a 30 second commute from old driveway to new driveway… so we didn’t move far, but we certainly were able to upgrade what we offer and how effectively we are able to do so. This same year we wanted to bring in a boat line that allowed us to enter the larger boat market, so we welcomed Crownline Boats to our dealership offering.

November 2021, C.A.S. underwent an ownership change from father to daughter (and son-in-law!) when Vanessa & Dan purchased the company from Chris. While Chris is no longer an owner or employee of C.A.S. Marine, he remains a regular visitor as he's started a new company selling a limited number of select used boats. Chris remains the landlord and a trusted advisor (but, dad and grandpa, first and foremost).


Over the years the product lines have seen minor changes, but a couple of things remain constant. C.A.S. Marine remains a family owned and operated boat dealer full of boaters on staff; they will ONLY carry brands that they feel confident standing behind; and only deal with manufacturer that confidently stand behind their product as well. At this time, the premium brand we carry is Crownline. A long-time manufacturer of quality boats with a depth of options/customization that can’t be matched.