Boat Repair & Marine Service in Middle Tennessee

Professional marine repair built to ABYC standards — Columbia, TN shop plus mobile service

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Marine Services

From electrical upgrades to fiberglass repair, we keep Middle Tennessee boaters on the water. Shop service in Columbia plus mobile and emergency service.

Electrical Systems

Complete marine electrical system design, installation, and troubleshooting. LiFePO₄ conversions, charging upgrades, and more.

  • DC system design and installation
  • LiFePO₄ battery conversions
  • Charging & alternator upgrades
  • Electrical troubleshooting
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Fiberglass & Gelcoat

Structural and cosmetic fiberglass repair. From minor gelcoat damage to more significant repairs done properly.

  • Gelcoat repair and color matching
  • Structural fiberglass repair
  • Blister repair
  • Through-hull installations
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Leak Diagnosis & Repair

Systematic leak detection and repair. We find the source, not just where water ends up, and fix it correctly.

  • Deck and hull leak detection
  • Window and hatch resealing
  • Through-hull and fitting leaks
  • Chainplate and deck hardware
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Generator Service

Marine generator maintenance, repair, and troubleshooting. Keep your onboard power reliable.

  • Generator maintenance
  • Troubleshooting and repair
  • Oil and filter service
  • Fuel system service
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Additional Services

Navigation, electronics, maintenance, and more.

Navigation & Electronics

NMEA 2000, chartplotters, AIS, radar, autopilot, and instrument installation. Modern electronics done right.

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Corrosion & Bonding

Galvanic corrosion prevention, bonding system inspection and repair, and zinc/anode management.

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Afterhours Service

Need service outside normal hours? We offer afterhours appointments at the marina or our Columbia shop.

Seasonal Maintenance

Winterization, spring commissioning, and seasonal prep. Protect your boat year-round.

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Charging System Health

Battery testing, alternator output checks, and shore power diagnostics. Keep your electrical system reliable.

Sailboat Services

Winch servicing, mast inspection and cleaning, electrical connection checks aloft, and running rigging maintenance.

ABYC Member — Built to Standards

Marine electrical work isn't the same as household wiring. Salt water, vibration, and the consequences of failure demand a higher standard.

TwinCraft is an ABYC member organization. All our marine electrical work follows ABYC (American Boat and Yacht Council) standards — the industry benchmark for safety and reliability. This means:

  • Proper wire sizing and protection
  • Correct terminal connections and strain relief
  • Appropriate fusing and circuit protection
  • Ignition protection where required
  • Proper grounding and bonding
ABYC Member - Safety Built In

Ready to Get Back on the Water?

Tell us about your boat and what you need. We'll get you back out there.

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