Service Shops


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>	Mechanical

	Refinishing

	Rigging

	Systems

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GIBY hits the sweet spot of being on one hand just big enough to provide full, custom service, yet on the other hand small enough to retain a family feeling in the best sense: tons of attention, clear and forthrigt communication, easy access to anyone, folks who really care about us and our boat, trust.

John Reid
Ramble

Mechanical

The Great Island Boat Yard diesel mechanics are ABYC certified and trained to service multiple brands of engines including Yanmar, Westerbeke, Mercruiser and more. We have strong relationships with independent specialists to provide advanced diagnostic and rebuild services for CAT, Detroit Diesel and Cummins engines.

We have developed detailed procedures for decommissioning and recommissioning. We follow these procedures rigorously and update them as a group after each season. We have developed a mechanical and system survey checklist that we complete during decommissioning to identify any issues that might impact the next boating season.

Mechanical Capabilities:

Routine diesel maintenance
Alignment
Engine diagnostics
Valve adjustments
Repower
Rebuild
Fuel polishing
Basic outboard maintenance