Service Department
De-Winterization
After months in storage, your boat needs more than a key turn to be truly ready. Our de-winterization service systematically brings every system back online — so your first day on the water this season is safe, smooth, and problem-free.
What's Included in De-Winterization
We reverse the full winterization process and inspect each system as we go. If anything didn't survive the off-season, we find it before you do.
- Remove fogging oil and reinstall spark plugs
- Charge, test, and replace batteries as needed
- Inspect and replace water pump impeller if due
- Flush and test cooling system for blockages
- Fuel system inspection and stabilizer flush
- Start, run, and verify all gauges and electronics
- Safety equipment inspection
Why Choose Thomas Marine?
Don't let the first nice weekend of the season turn into a troubleshooting day at the ramp. Let Thomas Marine de-winterize your boat in Georgetown, SC and hand you the keys ready to go.
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 De-Winterization
Pick a preferred drop-off date — our team will confirm availability before your appointment is finalized.
Step 1: Schedule Your Drop-Off
De-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 De-Winterization Service
Call us or send a message — we'll get back to you fast with an honest assessment.