303-791-6100

12294 Mead Way, Littleton CO 80125

Great Lakes Marine

Your Colorado HOME for Cobalt Boats, Boston Whaler and Yamaha Outboards.

Come see us in Littleton, CO! Find out why we were voted the #1 CSI Cobalt dealer in the world!

We are now operating on our Hours which are:

Monday-Thursday 8:00AM-6:00PM

Friday 8:00AM-5:00PM

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Colorado’s Cobalt and Boston Whaler Dealer Since 1976

Great Lakes Marine has been Colorado’s trusted boat dealership since 1976. From our Littleton showroom and full-service shop, we sell new Cobalt boats and Boston Whaler boats, plus quality pre-owned boats, and we service what we sell.

Our factory-trained technicians work on Volvo Penta, MerCruiser, Mercury outboards (1994 and newer), Yamaha outboards, and PCM inboards. From routine maintenance and winterization to repowers and major repairs, boaters across the Denver metro area and all of Colorado count on us to keep them on the water. It’s why we’re known as “The House that Service Built,” and why Cobalt recognized us as the #1 CSI (Customer Satisfaction Index) Cobalt dealer in the world.

Whether you’re buying your first boat or your fifth, we can help with sales, financing, trade-ins, parts, and service. Visit us in Littleton, minutes from Chatfield Reservoir, or call 303-791-6100.

Featured Boat

Cobalt Boats

Cobalt Boats Inventory→
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Boston Whaler

There are currently no new Boston Whaler boats listed.

Boston Whaler Inventory→
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Pre-Owned

Pre-Owned Inventory→
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Great Lakes Marine

The House that Service Built

Frequently Asked Questions

Where is Great Lakes Marine located?

You’ll find us at 12294 Mead Way, Littleton, CO 80125, minutes from Chatfield Reservoir. We serve boaters across the Denver metro area and throughout Colorado.

What boat brands does Great Lakes Marine sell?

We are an authorized dealer for new Cobalt boats and Boston Whaler boats, and we also carry quality pre-owned boats from brands including Sea Ray and Chaparral.

What engines and services does your shop handle?

Our service department works on Volvo Penta, MerCruiser, Mercury outboards (1994 and newer), Yamaha outboards, and PCM inboards. Services include routine maintenance, winterization, diagnostics, repowers, and major repairs.

Do you winterize boats?

Yes. Every fall we winterize sterndrive, inboard, and outboard boats, and we also offer shrink wrapping and haul-out help. Fall appointments fill quickly, so schedule early: 303-791-6100.

Do you offer financing and trade-ins?

Yes. We work with marine lenders for financing, and we take trade-ins on new and pre-owned boat purchases.

Can I schedule a viewing or sea trial?

Absolutely. Call 303-791-6100 or stop by our Littleton showroom, and we’ll arrange a viewing or get you on the water.