Our Headquarters


Same Location Since 1988

Stop by and check out our full inventory of new and pre-owned boats. Our sales department provides brokerage services and our Mercury Certified service center will meet all your maintenance needs. We offer full storage for your convenience if you decide to leave paradise for a short period of time, or just need a place to keep your boat year-round. Land storage is a lot more affordable than a rack-o-minimum with less than 2 miles to travel to either boat ramp in the area. Our completely fenced-in area is well-lit and secure.

Our history

Coastal Marine Center's founder, Todd Garthwait, established a strong foundation in marine service and customer relations working at other local marinas.

Todd establishes Coastal Marine Center Inc as a full-service, Mercury-Certified Dealer, offering new and pre-owned boat sales as well as a brokerage service.

Surviving the test of time, Coastal Marine has served its customers at the same location for the past 36 years. Shortly after its establishment, Mercury recognized Coastal Marine Center as a "Premier" Dealer, assuring you that we have all the specialty tooling it takes to get the job done right the first time and keep you on the water.

Meet our team

Service Department


Todd Garthwait

Owner and Service Manager

Todd has been here for you and your family for over 36 years. Todd has raced on the APBA circuit and has tremendous knowledge and background in all aspects of boating. Todd has been a boater since his childhood and has worked in the marine industry all of his adult life. He has been involved in fishing tournaments of all kinds and has done a lot of in country and out of country diving including wreck diving. When it comes time to service your boat, his knowledge and experience save you time and money.



Mercury Certified Marine Mechanic

Rick has over 36 years of marine technical service experience in various engine backgrounds. Rick is certified in many different areas of the industry from wiring to rebuilding complete engines. Rick participates in continuing education courses to keep his Mercury Outboard, Mercruiser Sterndrive, and other certifications up to date and to keep up with the marine industry’s latest technology.


Larry Duhaime

Fiberglass and Gelcoat Specialist

Larry has over 40 years of experience in the boating world. He spent 25 years in Guilford, CT where he gained experience with wooden boats, and 14 years in Hancock, Maine building custom boats.  He and his wife moved to Florida to enjoy the warm weather.  He is a master of gelcoat and fiberglass repairs, and he has brought his experience to Coastal Marine Center.


Office Manager

Lynn is the office manager here at Coastal Marine. She handles all aspects of the day to day operations of the business including billing, title work, accounting and payroll. Come in and say “hello” or give her a call with any of your questions. Her 36 years of experience in the marine industry can help save you and your family a lot of confusion and aggravation.

Sales Department

John Mazur

Sales Consultant

A lifelong boater, businessman, and sales professional, John has been helping people achieve their dreams for a very long time and continues doing so here at Coastal Marine Center as a knowledgeable and trusted sales consultant. Please take a look at our testimonial section and see what John's customers have to say about their experience working with him and with Coastal Marine and then give him a call and let him help to make your boating dreams come true.

Dave Summerour

Sales Consultant

Dave Summerour moved here in 2007 to enjoy the florida lifestyle. Dave has had a lifetime of boating experience on the lakes of the midwest and now enjoys boating on the beautiful coast of florida with Coastal Marine. Stop by our sales office and visit with Dave.

Kim Roberts

Listing Agent

Kim Roberts moved to Longboat Key, Florida in 2010 to enjoy a sunny life. She has experience boating in Arkansas and Oklahoma, and working as a business woman in Arkansas where she headed various organizations. Bringing her experience to Coastal Marine Center, she has works with customers to help take the worries out of private boat sales. By Listing customers' boats with Coastal Marine Centers, sellers can enjoy Florida without the headaches of no-shows, or strangers coming to their homes. Call Kim today at 941-488-2222 to list your boat, and start relaxing on your weekends.

Our advantages

  • 36 years in the business

    In the boat business, a lot of companies come and go. With Coastal Marine Center, you can rest assured that our commitment to you is backed by a long history of customer satisfaction.

  • Mercury Premier Dealer

    Mercury® evaluates the performance of its dealers every year. The best dealers, who demonstrate an exceptional commitment to customer service, are recognized as Premier Dealers. Year after year, Coastal Marine Center has been recognized as such.

  • Family Owned and Operated

    Dealing with a small business has its advantages. At Coastal Marine Center, every customer is equally important. Each member of our well-knit team knows how to play his or her role, and that ultimately leads to satisfied customers.

Our values

Happy Boating

We want all of our customers to have the Florida lifestyle experience of "Happy Boating". Here's how we do our part to make it happen:

  • Honesty: We'd rather tell our customers the truth and lose a sale than jepordize our reputation, or more importantly, the safety of our customers on the water.
  • Integrity: We do our part to make sure that any vessel on our lot is worthy of being represented by Coastal Marine. If a boat is junk, you won't find it for sale here.
  • Customer Satisfaction: For 36 years our top priority has been the satisfaction of our customers. By keeping our priorities straight over the years, we have established a loyal customer-base that brings in repeat business.

Clients say

I bought my first boat with Dave and he made it such a pleasant experience. He also went a step further and taught me a few basics of boating during the sea trial. The entire process was effortless and comfortable with no gimmicks or sales pitches. Just the boat. Thanks again Dave!

David - Miami, FL

I recently purchased a 2004 Boston Whaler Nantucket from John at Coastal Marine Center in Nokomis, Fl. He was very professional and knowledgeable, answering all my questions and making the whole process an easy one. He was honest and trustworthy, traits that are so important when you're making a large purchase such as this one. Even after taking the boat home, he was quick to respond to my emails and follow-up questions about the boat. I would highly recommend John and the Coastal Marine Center to anyone who is looking for a reasonable deal on a well-maintained pre-owned boat.

Shirley - Holiday, FL
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Coastal Marine Center is a full-service, Mercury-certified Premier Dealer. Established in 1988, Coastal Marine has been in the same location in Nokomis, FL for the past 36 years.

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New Boat Lines

We are your West-Coast Florida Dealer of Salty Boats and Stumpnocker.

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I recently purchased my boat from John at Coastal Marine Center in Nokomis, Fl. From the first phone call speaking with John, I felt comfortable in dealing with him. After arriving and speaking with John, I was ready to go ahead and make a move. John was very helpful and did all the work for me. After deciding on the boat, John called the finance institution he uses, and with in minutes after speaking with them, I was approved. With in a few days, I met up with John and his team at the office. He took me over to the marina, where my boat was waiting for me in the water, with a full tank of gas. We went out in the intra coastal for a sea trial run. John drove to boat for a while showing me all the gauges and controls to make sure I knew how it handles and where everything was before letting me take over. This is my 5th boat that I have owned over many years, and this was the best experience that I have had purchasing a boat. From taking ownership, John and his team has been there for any question I have had and have went over and above what I expected. Not a "buy the boat and see you" experience. I told a close friend about my boat, and after going to look at mine, he also purchased a boat from John with the same great customer service. Thanks to John and his team for making my boat purchase of such an easy road.....Rick

Rick - Venice, FL
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