Boat Winterization Essentials

An online class that covers all you need to know about winterizing your sailboat.

90 Minutes English Unlimited Access

Winterizing a sailboat is a crucial process for boat owners and can be quite intimidating for first-timers. It is important to protect the boat from the harsh winter weather and prevent damage to the boat's systems and gear. The winterizing process also protects items such as batteries, inboard and outboard engines, and more from damage and wear that lying idle can cause. This online class provides tips and a step-by-step guide on how to winterize your boat effectively. It also covers how to prepare for spring commissioning and getting your boat back out on the water and sailing again.

American Sailing Members - Save $10



  • Why winterizing is important, and how it protects your boat, not just through winter
  • Engine protection
  • Fuel and oil filters
  • Fuel stabilization
  • Checking all fluids (coolant, oil, raw water)
  • Running antifreeze through your inboard engine
  • Running antifreeze through all your freshwater systems
  • Battery Care, and setting up a trickle charger
  • Covering your boat
  • Winter bilge care
  • Battery care
  • Haul out / hull cleaning, inspection / watching where the yard is storing the boat
  • Storing with the mast up or down—pros and cons
  • Mast / rigging inspections
  • Shrink wrap / custom covers
  • Off season sail care
  • How to prepare for Spring commissioning

Your Instructors


Tibor is the owner of Victoria Sailing School (located in Denver, CO), and actually learned to sail in Colorado. He has over 2500nm of offshore sailing experience and races on J/22’s on Wednesday nights. He has been teaching Victoria Sailing School’s Diesel Engine Maintenance course for over 5 years, and performs all the maintenance on his own diesel engine (plus ~15 outboard engines).


Jeremiah started his journey with boating/sailing at the age of nine in Cleveland, Ohio on Lake Erie. He is a licensed USCG Master and is certified by American Sailing to teach 101, 103, 105, 106, and 118, and has extensive sailing and boating experience in all parts of Lake Erie and the Great Lakes. Jeremiah enjoys racing, working sailboat deliveries, operating the new American Sailing Affiliate, Learn to Sail Cleveland, and loves teaching folks how to sail.