Service Department
Boat Winterization
Proper winterization is the difference between a boat that starts in spring and one that doesn't. Whether you have an outboard, inboard, or I/O, Thomas Marine follows the manufacturer's procedure for your specific engine to protect every fluid system through the off-season.
What's Included in Professional Winterization
We service every system that can be damaged by cold temperatures, stale fuel, or moisture — nothing is skipped.
- Fuel stabilizer added and fully circulated
- Fogging oil applied through all cylinders
- Engine oil and filter change where due
- Lower unit or outdrive gear lube service
- Cooling system flush and antifreeze where applicable
- Battery disconnect, charge, or removal for storage
- Anode and zinc inspection
- All systems documented for spring commissioning
Why Choose Thomas Marine?
Skipping winterization or doing it halfway costs far more in spring repairs than the service itself. Thomas Marine in Georgetown, SC protects your investment correctly.
Our Process
Simple. Transparent. Professional.
Request Service
Call us or send a message with details about your boat and what you need. We respond fast.
Inspection & Diagnosis
We inspect and assess your boat thoroughly, identifying exactly what needs to be done and why.
Estimate & Approval
You receive a clear, honest estimate before any work begins. No surprises.
Service Completion
Work is completed to a high standard. We walk you through what was done before you leave.
Schedule Boat Winterization
Pick a preferred drop-off date — our team will confirm availability before your appointment is finalized.
Step 1: Schedule Your Drop-Off
Boat Winterization
Select your preferred drop-off date
Thomas Marine will confirm your appointment after reviewing shop availability, part availability, and service needs. Closed Sundays.
June 2026
Book Winterization Service
Call us or send a message — we'll get back to you fast with an honest assessment.