Båtleksikon
Frost protection
Frost protection on yachts: systems that freeze, FairHelm winterisation checks, and limits on claiming one product covers every loop.
Vad det är
Frost protection on a yacht is the set of drains, heaters, and antifreeze practices that stop freeze expansion from cracking engines, tanks, pumps, and seacock tails.
Anchor
Nordic winters punish forgotten raw-water loops and cockpit showers. FairHelm meets boats with cabin heaters running yet open seacocks still full of water.
FairHelm judgment
FairHelm judgment: incomplete winterisation is a cost and survey flag. A warm cabin alone does not protect every hose below the sole.
Limits
We do not invent one freeze temperature that fits every harbour. Follow maker guidance for engine and domestic systems on that boat.
Vanliga frågor
Q: Does automotive coolant always belong in the engine?
A: Use the coolant the engine maker specifies. Mix and type matter.
Q: Is a diesel heater enough frost protection?
A: It helps the cabin. Raw-water and tank loops still need a plan.
Q: Can I skip drains if I leave shore power on?
A: Power helps some heaters. Drains and closed valves still matter when power fails.