Service and repair

Repairs on engines and drives including Mercruiser and Volvo Penta. Complete engine work, repair/rebuild starters, alternators, carburetors, fuel pumps, exhaust and intake manifold work, fuel system repairs, and more. Complete drive work, inspection, and pressure/vacuum tests, complete rebuilds and repairs, seal testing and replacement, u-joint repair, internal gear/bearing shimming, and more. 

General Maintenance

Engine tune ups, belts, spark plugs, cap, rotor, points, oil changes, fuel and oil filters, corrosion protection, and general inspections. Drive gear lube change, sacrificial anode (zinc) replacement, painting, impeller replacements, bellows inspection and replacement, gimbal bearings, u-joints, and other procedures to keep repairs to a minimum.


Full winterization services on engine, water system, head, gererator, air conditioner, hot water heater, and icemakers.

Mobile Service

Our dedication to customer satisfaction and quality service is our top priority.

Old Line's ability for complete mobile service affords you the convenience of having your vessel serviced or repaired wherever the vessel is located. With dockside and home service you save the additional cost of boatyard storage or the effort involved in transporting the vessel. 

Our dockside service allows you the ability to access your vessel when you wish and for those with home dockage or trailered boats the comfort and cost savings of keeping your vessel at home while the work is being performed. Our complete mobile workshop allows for us to provide you with the specialized tools and equipment required to perform the repairs and or maintenance on your specific engine or drive.

Custom Fabrication

Complete electric panels, charging systems, shore power hook-up, equipment installations, (VHF, GPS, radios & speakers), lighting (both in cabin and on deck), windlass systems, fresh and raw water wash down, and TV/DVD systems.

Contact Us

Better yet, see us in person!

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

Old Line Marine LLC

846 Shady Oaks Road, West River, Maryland 20778, United States

(410) 402-1096


Monday - Friday: 7am - 5pm

Saturday: By appointment

Sunday: Closed

Drop us a line!