Serving Ontario boaters with trusted marine expertise

Marine Repair You Can Trust

Our Services

Comprehensive marine repair and maintenance for all makes and models.

Engine Repair & Diagnostics

Full engine diagnostics, repair, and complete rebuilds for inboard and outboard motors. We get you back on the water fast.

Hull & Fibreglass Repair

Expert hull repairs, fibreglass restoration, and structural work to keep your vessel seaworthy and looking its best.

Electrical Systems

Marine electrical diagnostics, wiring, and system upgrades. From navigation lights to full rewires, we handle it all.

Winterization & Storage

Protect your investment through the off-season with our complete winterization service and secure storage options.

Custom Installs

Wanting to add a new stereo system, GPS, bow thruster, Radar? We do it all.

Pre-Season & Pre-Purchase Inspections

Thorough pre-purchase inspections and pre-season inspections to ensure your boat is ready for the water. We do our best to identify issues before they become costly problems.

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Why Ontario Boaters Choose J.D.M Marine

We combine technical expertise with genuine care for every vessel we work on.

Experienced Technicians

Our licensed technicians bring years of hands-on experience with all major marine brands and engine types.

All Makes & Models

Whether you have a fishing boat, cruiser, or personal watercraft, we have the expertise to service it properly.

Fast Turnaround

We understand every day out of the water counts. We work efficiently to get your boat back to you as quickly as possible.

Transparent Pricing

No surprises. We provide clear estimates upfront and keep you informed throughout the repair process.