Are you in fresh or salt water?
Can you plug in a heater if temp drops low enough to freeze your raw water system?
I don’t think any one will give you a date
BUT!
My Cal 34-3 lived in water at Spicers marina Noank since 1990.
The marina is in a bight of fishers Island sound and is salt.
I have never drained the raw water system while she wintered in the water.
I had led acid batteries and never removed them from the boat and never plugged charger in.
The inside temp of Southern Comfort was usually just a few degrees below water temp.
Come April 1st I always just cranked her over and changed slips.
Fran Cichowski Southpaw #300 N30U Noank CT
Are you in fresh or salt water?
Can you plug in a heater if temp drops low enough to freeze your raw water system?
I don’t think any one will give you a date
BUT!
My Cal 34-3 lived in water at Spicers marina Noank since 1990.
The marina is in a bight of fishers Island sound and is salt.
I have never drained the raw water system while she wintered in the water.
I had led acid batteries and never removed them from the boat and never plugged charger in.
The inside temp of Southern Comfort was usually just a few degrees below water temp.
Come April 1st I always just cranked her over and changed slips.
Fran Cichowski Southpaw #300 N30U Noank CT