About Us

Scenic riverfront view of the Potomac River.

Cather Marine Inc. serving the lower Potomac River for 40 years. Cather Marine is a Yamaha outboard dealer, re-power,  and repair Center. Situated less than a mile from the St. Clements Island Museum in the Colton’s Point area, our Marina features a 30 ton lift for service and storage of both power boats and sailboats, with 70 slips in all, our Marina has 11 covered slips. Call or visit us at Cather Marine Inc. for parts and service, or enjoy a boat slip for the summer in one of the most idyllic parts of the Chesapeake!

Yamaha outboard service done by a technician at Cather Marine Inc.

Year-Round Sales, Storage, and Customer Service

Cather Marine Inc. has full time year-round staff, affordable parts, service, and storage. Aside from being a Yamaha Outboard Dealer. We specialize in Yamaha outboard repair, and service, however we have 40 years of experience working on Mercury, Mercruiser, Volvo Penta, and Yanmar engines as well as many others. We are here to help get you what you need just come and visit us at the marina or give us a call and talk to one of our technicians today!

Large fishing boat hauled out of the water with a 30-Ton Travel-Lift.

Complete Marine Service and Repair

We also do fiberglass boat repair, trailer repair and maintenance, boat hauling, bottom painting, gel coat application, shrink wrap, winterization, pump-outs, detailing, trailering large boats, and many other things just check-in and see. Whether it is parts, service, storage, supplies, or your boat needs a little TLC then stop by and see us at Cather Marine Inc.

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Hull preparation (sanding and scraping) for paint application on saltwater boats.

We are a Certified Yamaha Outboard Dealer we keep outboards  on-hand and can order upon request as well as parts for most manufacturers. Pump-outs, winterization, fiberglass work, detailing, boat ramp, we offer it all. Boat a bit sluggish? Caught in a crab pot? Come see us we can get you hauled washed and even painted whatever the case may be let us know!


Covered boat slips and ethanol free fuel pump at Cather Marine Inc.

“Cather Marine has taken care of my boats for over 25 years. I have always been happy with their work. They are creative in designing work-arounds for design flaws. I recommend them with confidence.“

-Robert Aldridge Nov. 2018

“Worked on my 20’ 1989 Grady White 200 hp Yamaha and treated me right. Bringing my 1999 Grady White 23’ 225 hp Yamaha to be checked out next week.”

-Anthony Lee May 2018

Contact Us

Contact us today! We would love to hear from you!

Better yet, see us in person!

We love our customers, so feel free to visit our marina during normal business hours.

Cather Marine Inc.

38270 Palmer Road, Coltons Point, Maryland 20626, United States

(301) 769-3335


Open today

08:00 am – 04:00 pm