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    Precision Marine began in 1985 when Cork Martusewicz bought Northern Propeller on Bay Street in Cape Vincent. In 1992, Precision Marine moved to the beautiful St. Lawrence River at Peos Bay. Precision Marine incorporated as Precision Marine at Peos Bay, Inc. in 2003. What began as a little prop shop has grown over 28 years to a full service marina offering personable, individualized attention to boat owners.

    Located directly across from the northern end of Carleton Island, Precision Marine at Peos Bay has a launch ramp, dockage, customer bathroom and shower, and parking.

   Our shop offers full marine engine service, hull repair, aluminum and stainless steel welding, propeller reconditioning. We have a fully-stocked parts department and our little marine store is stocked with a variety of goods.  Storage is available on site.

    Cork Martusewicz began his nautical training as an electrician in the Coast Guard. His college background in mechanical engineering includes extensive training in internal combustion engines. He has multi-state training in propeller repair. He is the one to consult when re-powering or enhancing your boat’s performance with a different engine or propeller. Cork is technician-certified through OMC-Bombardier, Mercruiser, and Volvo.

 
     The office captain will cheerfully work to keep you happy.

Our aim at Precision Marine is to make your boating experience a good one.

 Come see us soon!